diff --git a/src/main/java/com/falsepattern/endlessids/Hooks.java b/src/main/java/com/falsepattern/endlessids/Hooks.java
index 78f0687..15b5bc2 100644
--- a/src/main/java/com/falsepattern/endlessids/Hooks.java
+++ b/src/main/java/com/falsepattern/endlessids/Hooks.java
@@ -5,26 +5,74 @@ import com.falsepattern.endlessids.constants.ExtendedConstants;
 import com.falsepattern.endlessids.mixin.helpers.IChunkMixin;
 import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
 import lombok.val;
+import lombok.var;
 
 import net.minecraft.block.Block;
 import net.minecraft.init.Blocks;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.world.chunk.Chunk;
+import net.minecraft.world.chunk.NibbleArray;
+import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
 
 public class Hooks {
 
-    public static void getBlockData(final IExtendedBlockStorageMixin ebs, final byte[] data, final int offset) {
-        val lsb = ebs.getLSB();
-        val msb = ebs.getMSB();
-        Unsafer.arraycopy(lsb, 0, data, offset, lsb.length);
-        System.arraycopy(msb, 0, data, offset + lsb.length * 2, msb.length);
+    public static int getBlockData(final IExtendedBlockStorageMixin ebs, final byte[] data, int offset) {
+        val b1 = ebs.getB1();
+        System.arraycopy(b1, 0, data, offset, b1.length);
+        offset += b1.length;
+        val b2Low = ebs.getB2Low();
+        if (b2Low != null) {
+            System.arraycopy(b2Low.data, 0, data, offset, b2Low.data.length);
+            offset += b2Low.data.length;
+            val b2High = ebs.getB2High();
+            if (b2High != null) {
+                System.arraycopy(b2High.data, 0, data, offset, b2High.data.length);
+                offset += b2High.data.length;
+                val b3 = ebs.getB3();
+                if (b3 != null) {
+                    System.arraycopy(b3, 0, data, offset, b3.length);
+                }
+            }
+        }
+        return ebs.getStorageFlag();
     }
 
-    public static void setBlockData(final IExtendedBlockStorageMixin ebs, final byte[] data, final int offset) {
-        val lsb = ebs.getLSB();
-        val msb = ebs.getMSB();
-        Unsafer.arraycopy(data, offset, lsb, 0, lsb.length);
-        System.arraycopy(data, offset + lsb.length * 2, msb, 0, msb.length);
+    public static void setBlockData(final IExtendedBlockStorageMixin ebs, final byte[] data, int offset, final int storageFlag) {
+        val b1 = ebs.getB1();
+        System.arraycopy(data, offset, b1, 0, b1.length);
+        offset += b1.length;
+        if (storageFlag == 0b00) {
+            ebs.clearB2Low();
+            ebs.clearB2High();
+            ebs.clearB3();
+            return;
+        }
+        var b2Low = ebs.getB2Low();
+        if (b2Low == null) {
+            b2Low = ebs.createB2Low();
+        }
+        System.arraycopy(data, offset, b2Low.data, 0, b2Low.data.length);
+        offset += b2Low.data.length;
+        if (storageFlag == 0b01) {
+            ebs.clearB2High();
+            ebs.clearB3();
+            return;
+        }
+        var b2High = ebs.getB2High();
+        if (b2High == null) {
+            b2High = ebs.createB2High();
+        }
+        System.arraycopy(data, offset, b2High.data, 0, b2High.data.length);
+        offset += b2High.data.length;
+        if (storageFlag == 0b10) {
+            ebs.clearB3();
+            return;
+        }
+        var b3 = ebs.getB3();
+        if (b3 == null) {
+            b3 = ebs.createB3();
+        }
+        System.arraycopy(data, offset, b3, 0, b3.length);
     }
 
     public static void getBlockMeta(final IExtendedBlockStorageMixin ebs, final byte[] data, final int offset) {
@@ -38,103 +86,41 @@ public class Hooks {
     }
 
     public static void writeBlockDataToNBT(final NBTTagCompound nbt, final IExtendedBlockStorageMixin ebs) {
-        val ebsLSB = ebs.getLSB();
-        val ebsMSB = ebs.getMSB();
-
-        val byte1Data = new byte[ebsLSB.length];
-        byte[] byte2BottomNibbleData = null;
-        byte[] byte2TopNibbleData = null;
-        byte[] byte3Data = null;
-        for (int i = 0; i < ebsLSB.length; ++i) {
-            if (ebsMSB[i] != 0) {
-                if (byte3Data == null) {
-                    byte3Data = new byte[ebsLSB.length];
-                }
-                byte3Data[i] = ebsMSB[i];
-            }
-            val idLSB = (ebsLSB[i] & 0xFFFF);
-            byte1Data[i] = (byte) (idLSB & 0xFF);
-
-            if (idLSB <= 0xFF) {
-                continue;
-            }
-            val nibbleIndex = i >> 1;
-            val nibbleShift = (i & 1) * 4;
-            if (byte2BottomNibbleData == null) {
-                byte2BottomNibbleData = new byte[ebsLSB.length / 2];
-            }
-            byte2BottomNibbleData[nibbleIndex] |= ((idLSB >>> 8) & 0xF) << nibbleShift;
-
-            if (idLSB <= 0xFFF) {
-                continue;
-            }
-            if (byte2TopNibbleData == null) {
-                byte2TopNibbleData = new byte[ebsLSB.length / 2];
-            }
-            byte2TopNibbleData[nibbleIndex] |= ((idLSB >>> 12) & 0xF) << nibbleShift;
-
+        val b1 = ebs.getB1();
+        val b2Low = ebs.getB2Low();
+        val b2High = ebs.getB2High();
+        val b3 = ebs.getB3();
+        nbt.setByteArray("Blocks", b1);
+        if (b2Low != null) {
+            nbt.setByteArray("Add", b2Low.data);
         }
-        nbt.setByteArray("Blocks", byte1Data);
-        if (byte2BottomNibbleData != null) {
-            nbt.setByteArray("Add", byte2BottomNibbleData);
+        if (b2High != null) {
+            nbt.setByteArray("BlocksB2Hi", b2High.data);
         }
-        if (byte2TopNibbleData != null) {
-            nbt.setByteArray("BlocksB2Hi", byte2TopNibbleData);
-        }
-        if (byte3Data != null) {
-            nbt.setByteArray("BlocksB3", byte3Data);
+        if (b3 != null) {
+            nbt.setByteArray("BlocksB3", b3);
         }
     }
 
     public static void readBlockDataFromNBT(final IExtendedBlockStorageMixin ebs, final NBTTagCompound nbt) {
         assert nbt.hasKey("Blocks");
-        val byte1Data = nbt.getByteArray("Blocks");
-        val byte2BottomNibbleData = nbt.hasKey("Add") ? nbt.getByteArray("Add") : null;
-        val byte2TopNibbleData = nbt.hasKey("BlocksB2Hi") ? nbt.getByteArray("BlocksB2Hi") : null;
-        val byte3Data = nbt.hasKey("BlocksB3") ? nbt.getByteArray("BlocksB3") : null;
+        val b1 = nbt.getByteArray("Blocks");
+        final byte[] b2Low = nbt.hasKey("Add") ? nbt.getByteArray("Add") : null;
+        final byte[] b2High = nbt.hasKey("BlocksB2Hi") ? nbt.getByteArray("BlocksB2Hi") : null;
+        final byte[] b3 = nbt.hasKey("BlocksB3") ? nbt.getByteArray("BlocksB3") : null;
 
-        val lsb = ebs.getLSB();
-        val msb = ebs.getMSB();
-        for (int i = 0; i < lsb.length; i++) {
-            if (byte3Data != null) {
-                msb[i] = byte3Data[i];
-            }
-            int nibbleShift = (i & 1) * 4;
-            int id = byte1Data[i] & 0xFF;
-            if (byte2BottomNibbleData != null) {
-                id |= ((byte2BottomNibbleData[i >> 1] >> nibbleShift) & 0xF) << 8;
-            }
-            if (byte2TopNibbleData != null) {
-                id |= ((byte2TopNibbleData[i >> 1] >> nibbleShift) & 0xF) << 12;
-            }
-            lsb[i] = (short) id;
+        ebs.setB1(b1);
+        if (b2Low == null) {
+            ebs.clearB2Low();
+        } else {
+            ebs.setB2Low(new NibbleArray(b2Low, 4));
         }
-    }
-
-    public static void removeInvalidBlocksHook(final IExtendedBlockStorageMixin ebs) {
-        val blkIdsLSB = ebs.getLSB();
-        val blkIdsMSB = ebs.getMSB();
-        int cntNonEmpty = 0;
-        int cntTicking = 0;
-        for (int off = 0; off < blkIdsLSB.length; ++off) {
-            final int id =
-                    ((blkIdsLSB[off] & 0xFFFF) | ((blkIdsMSB[off] & 0xFF) << 16)) & ExtendedConstants.blockIDMask;
-            if (id > 0) {
-                final Block block = (Block) Block.blockRegistry.getObjectById(id);
-                if (block == null) {
-                    if (GeneralConfig.removeInvalidBlocks) {
-                        blkIdsLSB[off] = 0;
-                    }
-                } else if (block != Blocks.air) {
-                    ++cntNonEmpty;
-                    if (block.getTickRandomly()) {
-                        ++cntTicking;
-                    }
-                }
-            }
+        if (b2High == null) {
+            ebs.clearB2High();
+        } else {
+            ebs.setB2High(new NibbleArray(b2High, 4));
         }
-        ebs.setBlockRefCount(cntNonEmpty);
-        ebs.setTickRefCount(cntTicking);
+        ebs.setB3(b3);
     }
 
     public static int getIdFromBlockWithCheck(final Block block, final Block oldBlock) {
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/helpers/IExtendedBlockStorageMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/helpers/IExtendedBlockStorageMixin.java
index 871327a..42b9a60 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/helpers/IExtendedBlockStorageMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/helpers/IExtendedBlockStorageMixin.java
@@ -1,13 +1,29 @@
 package com.falsepattern.endlessids.mixin.helpers;
 
+import net.minecraft.world.chunk.NibbleArray;
+
 public interface IExtendedBlockStorageMixin {
-    void setBlockRefCount(int value);
+    byte[] getB1();
+    void setB1(byte[] data);
 
-    void setTickRefCount(int value);
+    NibbleArray getB2Low();
+    void setB2Low(NibbleArray data);
+    void clearB2Low();
+    NibbleArray createB2Low();
 
-    short[] getLSB();
+    NibbleArray getB2High();
+    void setB2High(NibbleArray data);
+    void clearB2High();
+    NibbleArray createB2High();
 
-    byte[] getMSB();
+    byte[] getB3();
+    void setB3(byte[] data);
+    void clearB3();
+    byte[] createB3();
+
+    int getStorageFlag();
+
+    int getID(int x, int y, int z);
 
     short[] getMetaArray();
 }
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/client/blockitem/vanilla/ChunkMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/client/blockitem/vanilla/ChunkMixin.java
index 9f2295e..d7a62af 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/client/blockitem/vanilla/ChunkMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/client/blockitem/vanilla/ChunkMixin.java
@@ -3,6 +3,7 @@ package com.falsepattern.endlessids.mixin.mixins.client.blockitem.vanilla;
 import com.falsepattern.endlessids.Hooks;
 import com.falsepattern.endlessids.constants.ExtendedConstants;
 import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
+import lombok.val;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
@@ -25,9 +26,6 @@ public abstract class ChunkMixin {
     @Shadow
     private ExtendedBlockStorage[] storageArrays;
 
-    //This is needed because the array is not a field, but a local, and local arraylength overriding does not exist
-    private static byte[] fakeArray;
-
     @Redirect(method = "fillChunk",
               at = @At(value = "FIELD",
                        target = "Lnet/minecraft/world/chunk/Chunk;storageArrays:[Lnet/minecraft/world/chunk/storage/ExtendedBlockStorage;",
@@ -47,15 +45,26 @@ public abstract class ChunkMixin {
             locals = LocalCapture.CAPTURE_FAILHARD,
             require = 1)
     private void blockData(byte[] p_76607_1_, int p_76607_2_, int p_76607_3_, boolean p_76607_4_, CallbackInfo ci, Iterator iterator, int k, boolean flag1, int l) {
-        Hooks.setBlockData((IExtendedBlockStorageMixin) this.storageArrays[l], p_76607_1_, k);
+        val storageFlag = (p_76607_3_ >>> l) & 0b11;
+        Hooks.setBlockData((IExtendedBlockStorageMixin) this.storageArrays[l], p_76607_1_, k, storageFlag);
     }
 
+
+    //This is needed because the array is not a field, but a local, and local arraylength overriding does not exist
+    private static byte[][] fakeArrays;
     @Redirect(method = "fillChunk",
               at = @At(value = "INVOKE",
                        target = "Lnet/minecraft/world/chunk/storage/ExtendedBlockStorage;getBlockLSBArray()[B"),
               require = 1)
     private byte[] fakeLSBArray(ExtendedBlockStorage instance) {
-        return fakeArray != null ? fakeArray : (fakeArray = new byte[16 * 16 * 16 * ExtendedConstants.bytesPerID]);
+        if (fakeArrays == null) {
+            fakeArrays = new byte[4][];
+            fakeArrays[0] = new byte[16 * 16 * 16 * 2 / 2];
+            fakeArrays[1] = new byte[16 * 16 * 16 * 3 / 2];
+            fakeArrays[2] = new byte[16 * 16 * 16 * 4 / 2];
+            fakeArrays[3] = new byte[16 * 16 * 16 * 6 / 2];
+        }
+        return fakeArrays[((IExtendedBlockStorageMixin)instance).getStorageFlag()];
     }
 
     @Redirect(method = "fillChunk",
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/biome/vanilla/S26PacketMapChunkBulkMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/biome/vanilla/S26PacketMapChunkBulkMixin.java
deleted file mode 100644
index 5f0d259..0000000
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/biome/vanilla/S26PacketMapChunkBulkMixin.java
+++ /dev/null
@@ -1,20 +0,0 @@
-package com.falsepattern.endlessids.mixin.mixins.common.biome.vanilla;
-
-import com.falsepattern.endlessids.constants.ExtendedConstants;
-import com.falsepattern.endlessids.constants.VanillaConstants;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.Constant;
-import org.spongepowered.asm.mixin.injection.ModifyConstant;
-
-import net.minecraft.network.play.server.S26PacketMapChunkBulk;
-
-@Mixin(S26PacketMapChunkBulk.class)
-public abstract class S26PacketMapChunkBulkMixin {
-
-    @ModifyConstant(method = "readPacketData",
-                    constant = @Constant(intValue = VanillaConstants.bytesPerBiome * 16 * 16),
-                    require = 1)
-    private int extend2(int contant) {
-        return ExtendedConstants.bytesPerBiome * 16 * 16;
-    }
-}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/ubc/BiomeUndergroundDecoratorMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/ubc/BiomeUndergroundDecoratorMixin.java
index 3ca4c4c..83ee3c3 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/ubc/BiomeUndergroundDecoratorMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/ubc/BiomeUndergroundDecoratorMixin.java
@@ -3,6 +3,7 @@ package com.falsepattern.endlessids.mixin.mixins.common.blockitem.ubc;
 import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
 import exterminatorJeff.undergroundBiomes.worldGen.BiomeUndergroundDecorator;
 import exterminatorJeff.undergroundBiomes.worldGen.OreUBifier;
+import lombok.val;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;
@@ -16,7 +17,7 @@ import java.util.logging.Logger;
        remap = false)
 public abstract class BiomeUndergroundDecoratorMixin {
     private static NibbleArray fakeArray;
-    private ThreadLocal<IExtendedBlockStorageMixin> ebs;
+    private IExtendedBlockStorageMixin ebs;
 
     @Redirect(method = {"replaceChunkOres(IILnet/minecraft/world/World;)V",
                         "replaceChunkOres(Lnet/minecraft/world/chunk/IChunkProvider;II)V"},
@@ -24,13 +25,10 @@ public abstract class BiomeUndergroundDecoratorMixin {
                        target = "Lnet/minecraft/world/chunk/storage/ExtendedBlockStorage;getBlockLSBArray()[B",
                        remap = true),
               require = 2)
-    private byte[] returnMSBasLSB(ExtendedBlockStorage instance) {
-        if (ebs == null) {
-            ebs = new ThreadLocal<>();
-        }
+    private byte[] returnLSB(ExtendedBlockStorage instance) {
         IExtendedBlockStorageMixin iebs = (IExtendedBlockStorageMixin) instance;
-        ebs.set(iebs);
-        return iebs.getMSB();
+        ebs = iebs;
+        return iebs.getB1();
     }
 
     @Redirect(method = {"replaceChunkOres(IILnet/minecraft/world/World;)V",
@@ -50,17 +48,9 @@ public abstract class BiomeUndergroundDecoratorMixin {
                        remap = true),
               require = 2)
     private int returnRestOfID(NibbleArray instance, int x, int y, int z) {
-        return ebs.get().getLSB()[y << 8 | z << 4 | x] & 0xFFFF;
-    }
-
-    @Redirect(method = {"replaceChunkOres(IILnet/minecraft/world/World;)V",
-                        "replaceChunkOres(Lnet/minecraft/world/chunk/IChunkProvider;II)V"},
-              at = @At(value = "INVOKE",
-                       target = "LexterminatorJeff/undergroundBiomes/worldGen/OreUBifier;blockReplacer(I)LexterminatorJeff/undergroundBiomes/worldGen/OreUBifier$BlockReplacer;"),
-              require = 2)
-    private OreUBifier.BlockReplacer reshuffleID(OreUBifier instance, int blockID) {
-        blockID = ((blockID & 0xFF) << 16) | ((blockID & 0xFFFF00) >>> 8);
-        return instance.blockReplacer(blockID);
+        val id = ebs.getID(x, y, z) >>> 8;
+        ebs = null;
+        return id;
     }
 
     @Redirect(method = "correctBiomeDecorators",
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/ExtendedBlockStorageMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/ExtendedBlockStorageMixin.java
index 57bc226..b9c25ca 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/ExtendedBlockStorageMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/ExtendedBlockStorageMixin.java
@@ -3,9 +3,10 @@ package com.falsepattern.endlessids.mixin.mixins.common.blockitem.vanilla;
 import com.falsepattern.endlessids.EndlessIDs;
 import com.falsepattern.endlessids.Hooks;
 import com.falsepattern.endlessids.Tags;
+import com.falsepattern.endlessids.config.GeneralConfig;
 import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
 import lombok.val;
-import org.objectweb.asm.Opcodes;
+import lombok.var;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Overwrite;
 import org.spongepowered.asm.mixin.Shadow;
@@ -28,30 +29,12 @@ public abstract class ExtendedBlockStorageMixin implements IExtendedBlockStorage
     private int tickRefCount;
     @Shadow private byte[] blockLSBArray;
     @Shadow private NibbleArray blockMetadataArray;
-    private short[] lsbArray;
-    private byte[] msbArray;
+
+    @Shadow private NibbleArray blockMSBArray;
+    private NibbleArray b2High;
+    private byte[] b3;
     private short[] metaArray;
 
-    @Override
-    public void setBlockRefCount(int value) {
-        blockRefCount = value;
-    }
-
-    @Override
-    public void setTickRefCount(int value) {
-        tickRefCount = value;
-    }
-
-    @Override
-    public short[] getLSB() {
-        return lsbArray;
-    }
-
-    @Override
-    public byte[] getMSB() {
-        return msbArray;
-    }
-
     @Override
     public short[] getMetaArray() {
         return metaArray;
@@ -61,26 +44,50 @@ public abstract class ExtendedBlockStorageMixin implements IExtendedBlockStorage
             at = @At(value = "RETURN"),
             require = 1)
     private void init(CallbackInfo ci) {
-        blockLSBArray = null;
         blockMetadataArray = null;
-        lsbArray = new short[16 * 16 * 16];
-        msbArray = new byte[16 * 16 * 16];
         metaArray = new short[16 * 16 * 16];
     }
 
-    private int getID(int x, int y, int z) {
+    public int getID(int x, int y, int z) {
         int index = y << 8 | z << 4 | x;
-        int lsb = lsbArray[index] & 0xFFFF;
-        int msb = (msbArray[index] & 0xFF) << 16;
-        return lsb | msb;
+        int id = blockLSBArray[index] & 0xFF;
+        if (blockMSBArray != null) {
+            id |= blockMSBArray.get(x, y, z) << 8;
+            if (b2High != null) {
+                id |= b2High.get(x, y, z) << 12;
+                if (b3 != null) {
+                    id |= (b3[index] & 0xFF) << 16;
+                }
+            }
+        }
+        return id;
     }
 
     private void setID(int x, int y, int z, int id) {
         int index = y << 8 | z << 4 | x;
-        int lsb = id & 0xFFFF;
-        int msb = (id >>> 16) & 0xFF;
-        lsbArray[index] = (short) lsb;
-        msbArray[index] = (byte) msb;
+        blockLSBArray[index] = (byte) (id & 0xFF);
+        if (id > 0xFF) {
+            if (blockMSBArray == null) {
+                blockMSBArray = new NibbleArray(blockLSBArray.length, 4);
+            }
+            if (id > 0xFFF) {
+                if (b2High == null) {
+                    b2High = new NibbleArray(blockLSBArray.length, 4);
+                }
+                if (id > 0xFFFF && b3 == null) {
+                    b3 = new byte[blockLSBArray.length];
+                }
+            }
+        }
+        if (blockMSBArray != null) {
+            blockMSBArray.set(x, y, z, (id >>> 8) & 0xF);
+            if (b2High != null) {
+                b2High.set(x, y, z, (id >>> 12) & 0xF);
+                if (b3 != null) {
+                    b3[index] = (byte) ((id >>> 16) & 0xFF);
+                }
+            }
+        }
     }
 
     /**
@@ -137,13 +144,17 @@ public abstract class ExtendedBlockStorageMixin implements IExtendedBlockStorage
         metaArray[index] = (short)(meta & 0xFFFF);
     }
 
-    /**
-     * @author FalsePattern
-     * @reason Direct port from dumped code
-     */
-    @Overwrite
-    public void removeInvalidBlocks() {
-        Hooks.removeInvalidBlocksHook(this);
+    @Redirect(method = "removeInvalidBlocks",
+              at = @At(value = "INVOKE",
+                       target = "Lnet/minecraft/world/chunk/storage/ExtendedBlockStorage;getBlockByExtId(III)Lnet/minecraft/block/Block;"),
+              require = 1)
+    private Block removeInvalidBlocks(ExtendedBlockStorage instance, int x, int y, int z) {
+        var block = instance.getBlockByExtId(x, y, z);
+        if (block == null && GeneralConfig.removeInvalidBlocks) {
+            instance.func_150818_a(x, y, z, Blocks.air);
+            block = Blocks.air;
+        }
+        return block;
     }
 
     private UnsupportedOperationException emergencyCrash() {
@@ -154,6 +165,90 @@ public abstract class ExtendedBlockStorageMixin implements IExtendedBlockStorage
         return new UnsupportedOperationException(crashMSG);
     }
 
+    @Override
+    public byte[] getB1() {
+        return blockLSBArray;
+    }
+
+    @Override
+    public void setB1(byte[] data) {
+        blockLSBArray = data;
+    }
+
+    @Override
+    public NibbleArray getB2Low() {
+        return blockMSBArray;
+    }
+
+    @Override
+    public void clearB2Low() {
+        blockMSBArray = null;
+    }
+
+    @Override
+    public void setB2Low(NibbleArray data) {
+        blockMSBArray = data;
+    }
+
+    @Override
+    public NibbleArray createB2Low() {
+        return (blockMSBArray = new NibbleArray(blockLSBArray.length, 4));
+    }
+
+    @Override
+    public NibbleArray getB2High() {
+        return b2High;
+    }
+
+    @Override
+    public void setB2High(NibbleArray data) {
+        b2High = data;
+    }
+
+    @Override
+    public void clearB2High() {
+        b2High = null;
+    }
+
+    @Override
+    public NibbleArray createB2High() {
+        return (b2High = new NibbleArray(blockLSBArray.length, 4));
+    }
+
+    @Override
+    public byte[] getB3() {
+        return b3;
+    }
+
+    @Override
+    public void setB3(byte[] data) {
+        b3 = data;
+    }
+
+    @Override
+    public void clearB3() {
+        b3 = null;
+    }
+
+    @Override
+    public byte[] createB3() {
+        return b3 = new byte[blockLSBArray.length];
+    }
+
+    @Override
+    public int getStorageFlag() {
+        if (blockMSBArray == null) {
+            return 0b00;
+        }
+        if (b2High == null) {
+            return 0b01;
+        }
+        if (b3 == null) {
+            return 0b10;
+        }
+        return 0b11;
+    }
+
     @Inject(method = {"getBlockMSBArray", "createBlockMSBArray"},
             at = @At("HEAD"))
     private void crashMSBArray(CallbackInfoReturnable<NibbleArray> cir) {
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S21PacketChunkDataMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S21PacketChunkDataMixin.java
index e762770..2d57aeb 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S21PacketChunkDataMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S21PacketChunkDataMixin.java
@@ -1,10 +1,10 @@
 package com.falsepattern.endlessids.mixin.mixins.common.blockitem.vanilla;
 
-import com.falsepattern.endlessids.EndlessIDs;
 import com.falsepattern.endlessids.Hooks;
 import com.falsepattern.endlessids.constants.ExtendedConstants;
 import com.falsepattern.endlessids.constants.VanillaConstants;
 import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
+import lombok.val;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Constant;
@@ -37,16 +37,24 @@ public abstract class S21PacketChunkDataMixin {
             locals = LocalCapture.CAPTURE_FAILHARD,
             require = 1)
     private static void hookGetBlockData(Chunk p_149269_0_, boolean p_149269_1_, int p_149269_2_, CallbackInfoReturnable<S21PacketChunkData.Extracted> cir, int j, ExtendedBlockStorage[] aextendedblockstorage, int k, S21PacketChunkData.Extracted extracted, byte[] abyte, int l) {
-        Hooks.getBlockData((IExtendedBlockStorageMixin) aextendedblockstorage[l], abyte, j);
+        val ebs = (IExtendedBlockStorageMixin) aextendedblockstorage[l];
+        extracted.field_150281_c |= Hooks.getBlockData(ebs, abyte, j) << l * 2;
     }
 
-    private static byte[] fakeArray;
+    private static byte[][] fakeArrays;
     @Redirect(method = "func_149269_a",
               at = @At(value = "INVOKE",
                        target = "Lnet/minecraft/world/chunk/storage/ExtendedBlockStorage;getBlockLSBArray()[B"),
               require = 1)
     private static byte[] hookGetBlockDataFakeArray(ExtendedBlockStorage instance) {
-        return fakeArray != null ? fakeArray : (fakeArray = new byte[16 * 16 * 16 * ExtendedConstants.bytesPerID]);
+        if (fakeArrays == null) {
+            fakeArrays = new byte[4][];
+            fakeArrays[0] = new byte[16 * 16 * 16 * 2 / 2];
+            fakeArrays[1] = new byte[16 * 16 * 16 * 3 / 2];
+            fakeArrays[2] = new byte[16 * 16 * 16 * 4 / 2];
+            fakeArrays[3] = new byte[16 * 16 * 16 * 6 / 2];
+        }
+        return fakeArrays[((IExtendedBlockStorageMixin)instance).getStorageFlag()];
     }
 
     @Redirect(method = "func_149269_a",
@@ -103,11 +111,4 @@ public abstract class S21PacketChunkDataMixin {
     private static void hookGetBlockMetaNoCopy(Object src, int srcPos, Object dest, int destPos, int length) {
 
     }
-
-    @ModifyConstant(method = "readPacketData",
-                    constant = @Constant(intValue = VanillaConstants.bytesPerEBS),
-                    require = 1)
-    private int increaseReadSize(int constant) {
-        return ExtendedConstants.bytesPerEBS;
-    }
 }
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S26PacketMapChunkBulkMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S26PacketMapChunkBulkMixin.java
deleted file mode 100644
index 2789728..0000000
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/blockitem/vanilla/S26PacketMapChunkBulkMixin.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.falsepattern.endlessids.mixin.mixins.common.blockitem.vanilla;
-
-import com.falsepattern.endlessids.constants.ExtendedConstants;
-import com.falsepattern.endlessids.constants.VanillaConstants;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.Constant;
-import org.spongepowered.asm.mixin.injection.ModifyConstant;
-
-import net.minecraft.network.play.server.S26PacketMapChunkBulk;
-
-@Mixin(S26PacketMapChunkBulk.class)
-public abstract class S26PacketMapChunkBulkMixin {
-    @ModifyConstant(method = "readPacketData",
-                    constant = @Constant(intValue = VanillaConstants.bytesPerIDPlusMetadata * 16 * 16 * 16),
-                    require = 1)
-    private int extend1(int constant) {
-        return ExtendedConstants.bytesPerIDPlusMetadata * 16 * 16 * 16;
-    }
-}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S21PacketChunkDataMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S21PacketChunkDataMixin.java
index 8c95d76..fc3f55f 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S21PacketChunkDataMixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S21PacketChunkDataMixin.java
@@ -1,26 +1,99 @@
 package com.falsepattern.endlessids.mixin.mixins.common.vanilla;
 
-import com.falsepattern.endlessids.Hooks;
 import com.falsepattern.endlessids.constants.ExtendedConstants;
 import com.falsepattern.endlessids.constants.VanillaConstants;
-import com.falsepattern.endlessids.mixin.helpers.IChunkMixin;
-import com.falsepattern.endlessids.mixin.helpers.IExtendedBlockStorageMixin;
+import io.netty.buffer.ByteBuf;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyConstant;
 import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
+import net.minecraft.network.PacketBuffer;
 import net.minecraft.network.play.server.S21PacketChunkData;
-import net.minecraft.world.chunk.Chunk;
-import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
+
+import java.io.IOException;
+import java.util.zip.DataFormatException;
+import java.util.zip.Inflater;
 
 @Mixin(S21PacketChunkData.class)
 public abstract class S21PacketChunkDataMixin {
+    @Shadow private int field_149280_d;
+
+    @Shadow private byte[] field_149278_f;
+
+    @Shadow private int field_149284_a;
+
+    @Shadow private int field_149282_b;
+
+    @Shadow private boolean field_149279_g;
+
+    @Shadow private int field_149283_c;
+
+    @Shadow private int field_149285_h;
+
+    @Shadow private static byte[] field_149286_i;
+
     @ModifyConstant(method = {"<clinit>", "func_149275_c"},
                     constant = @Constant(intValue = VanillaConstants.bytesPerChunk),
                     require = 1)
     private static int increasePacketSize(int constant) {
         return ExtendedConstants.bytesPerChunk;
     }
+
+
+    @Inject(method = "writePacketData",
+            at = @At(value = "INVOKE",
+                       target = "Lnet/minecraft/network/PacketBuffer;writeShort(I)Lio/netty/buffer/ByteBuf;",
+                       ordinal = 1),
+            require = 1)
+    private void extendWrite(PacketBuffer p_148840_1_, CallbackInfo ci) {
+        p_148840_1_.writeInt(this.field_149280_d);
+        p_148840_1_.writeInt(this.field_149278_f.length);
+    }
+
+    @Redirect(method = "writePacketData",
+              at = @At(value = "INVOKE",
+                       target = "Lnet/minecraft/network/PacketBuffer;writeShort(I)Lio/netty/buffer/ByteBuf;",
+                       ordinal = 1),
+              require = 1)
+    private ByteBuf suppressOldWrite(PacketBuffer instance, int p_writeShort_1_) {
+        return null;
+    }
+
+    @Inject(method = "readPacketData",
+            at = @At("HEAD"),
+            require = 1,
+            cancellable = true)
+    private void customRead(PacketBuffer data, CallbackInfo ci) throws IOException {
+        this.field_149284_a = data.readInt();
+        this.field_149282_b = data.readInt();
+        this.field_149279_g = data.readBoolean();
+        this.field_149283_c = data.readShort();
+        this.field_149280_d = data.readInt();
+        int length = data.readInt();
+        this.field_149285_h = data.readInt();
+
+        if (field_149286_i.length < this.field_149285_h) {
+            field_149286_i = new byte[this.field_149285_h];
+        }
+
+        data.readBytes(field_149286_i, 0, this.field_149285_h);
+
+        this.field_149278_f = new byte[length];
+        Inflater inflater = new Inflater();
+        inflater.setInput(field_149286_i, 0, this.field_149285_h);
+
+        try {
+            inflater.inflate(this.field_149278_f);
+        } catch (DataFormatException dataformatexception) {
+            throw new IOException("Bad compressed data format");
+        } finally {
+            inflater.end();
+        }
+        ci.cancel();
+    }
 }
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S26PacketMapChunkBulkMixin.java b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S26PacketMapChunkBulkMixin.java
new file mode 100644
index 0000000..ac053b1
--- /dev/null
+++ b/src/main/java/com/falsepattern/endlessids/mixin/mixins/common/vanilla/S26PacketMapChunkBulkMixin.java
@@ -0,0 +1,71 @@
+package com.falsepattern.endlessids.mixin.mixins.common.vanilla;
+
+import io.netty.buffer.ByteBuf;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.Redirect;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.network.play.server.S26PacketMapChunkBulk;
+
+import java.util.zip.Inflater;
+
+@Mixin(S26PacketMapChunkBulk.class)
+public abstract class S26PacketMapChunkBulkMixin {
+    @Shadow private int[] field_149262_d;
+
+    @Shadow private byte[][] field_149260_f;
+
+    @Shadow private int[] field_149266_a;
+
+    @Shadow private int[] field_149264_b;
+
+    @Shadow private int[] field_149265_c;
+
+    @Inject(method = "writePacketData",
+            at = @At(value = "INVOKE",
+                     target = "Lnet/minecraft/network/PacketBuffer;writeShort(I)Lio/netty/buffer/ByteBuf;",
+                     ordinal = 2),
+            locals = LocalCapture.CAPTURE_FAILHARD,
+            require = 1)
+    private void extendWrite(PacketBuffer p_148840_1_, CallbackInfo ci, int i) {
+        p_148840_1_.writeInt(this.field_149262_d[i]);
+        p_148840_1_.writeInt(this.field_149260_f[i].length);
+    }
+
+    @Redirect(method = "writePacketData",
+              at = @At(value = "INVOKE",
+                       target = "Lnet/minecraft/network/PacketBuffer;writeShort(I)Lio/netty/buffer/ByteBuf;",
+                       ordinal = 2),
+              require = 1)
+    private ByteBuf suppressOldWrite(PacketBuffer instance, int p_writeShort_1_) {
+        return null;
+    }
+
+    @Inject(method = "readPacketData",
+            at = @At(value = "INVOKE",
+                     target = "Ljava/util/zip/Inflater;inflate([B)I",
+                     shift = At.Shift.AFTER),
+            require = 1,
+            locals = LocalCapture.CAPTURE_FAILHARD,
+            cancellable = true)
+    private void customRead(PacketBuffer data, CallbackInfo ci, short short1, byte[] abyte, Inflater inflater) {
+        int i = 0;
+
+        for (int j = 0; j < short1; ++j) {
+            this.field_149266_a[j] = data.readInt();
+            this.field_149264_b[j] = data.readInt();
+            this.field_149265_c[j] = data.readShort();
+            this.field_149262_d[j] = data.readInt();
+            byte[] dataBytes = new byte[data.readInt()];
+            this.field_149260_f[j] = dataBytes;
+            System.arraycopy(abyte, i, dataBytes, 0, dataBytes.length);
+            i += dataBytes.length;
+        }
+        ci.cancel();
+    }
+}
diff --git a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
index 9d09f40..4f243a5 100644
--- a/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
+++ b/src/main/java/com/falsepattern/endlessids/mixin/plugin/Mixin.java
@@ -19,6 +19,7 @@ public enum Mixin implements IMixin {
     //region common
     //region vanilla
     S21PacketChunkDataMixin(Side.COMMON, always(), "vanilla.S21PacketChunkDataMixin"),
+    S26PacketMapChunkBulkMixin(Side.COMMON, always(), "vanilla.S26PacketMapChunkBulkMixin"),
     //endregion vanilla
     //region AntiIDConflict
     AIDCAntiIdConflictBaseMixin(Side.COMMON, require(TargetedMod.ANTIIDCONFLICT), "antiidconflict.AntiIdConflictBaseMixin"),
@@ -38,7 +39,6 @@ public enum Mixin implements IMixin {
     GenLayerRiverMixMixin(Side.COMMON, condition(() -> GeneralConfig.extendBiome).and(avoid(TargetedMod.DRAGONAPI)), "biome.vanilla.GenLayerRiverMixMixin"),
     GenLayerVoronoiZoomMixin(Side.COMMON, condition(() -> GeneralConfig.extendBiome), "biome.vanilla.GenLayerVoronoiZoomMixin"),
     S21PacketChunkDataMixinBiome(Side.COMMON, condition(() -> GeneralConfig.extendBiome), "biome.vanilla.S21PacketChunkDataMixin"),
-    S26PacketMapChunkBulkMixinBiome(Side.COMMON, condition(() -> GeneralConfig.extendBiome), "biome.vanilla.S26PacketMapChunkBulkMixin"),
     //endregion vanilla
     //region AbyssalCraft
     AbyssalCraftMixin(Side.COMMON, condition(() -> GeneralConfig.extendBiome).and(require(TargetedMod.ABYSSALCRAFT)), "biome.abyssalcraft.AbyssalCraftMixin"),
@@ -173,7 +173,6 @@ public enum Mixin implements IMixin {
     S21PacketChunkDataMixinBlockItem(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.S21PacketChunkDataMixin"),
     S22PacketMultiBlockChangeMixin(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.S22PacketMultiBlockChangeMixin"),
     S24PacketBlockActionMixin(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.S24PacketBlockActionMixin"),
-    S26PacketMapChunkBulkMixinBlockItem(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.S26PacketMapChunkBulkMixin"),
     StatListMixin(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.StatListMixin"),
     WorldMixin(Side.COMMON, condition(() -> GeneralConfig.extendBlockItem), "blockitem.vanilla.WorldMixin"),
     //endregion vanilla