diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/chunks/ChunkSection1_13.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/chunks/ChunkSection1_13.java
index 736b6891f..4361e0d70 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/chunks/ChunkSection1_13.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/chunks/ChunkSection1_13.java
@@ -135,7 +135,12 @@ public class ChunkSection1_13 implements ChunkSection {
         }
 
         // Read blocks
-        Long[] blockData = Type.LONG_ARRAY.read(input);
+        // Long[] blockData = Type.LONG_ARRAY.read(input);
+        long[] blockData = new long[Type.VAR_INT.read(input)];
+        for (int i = 0; i < blockData.length; i++) {
+            blockData[i] = input.readLong();
+        }
+
         if (blockData.length > 0) {
             for (int i = 0; i < blocks.length; i++) {
                 int bitIndex = i * bitsPerBlock;
@@ -222,7 +227,7 @@ public class ChunkSection1_13 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
@@ -265,7 +270,7 @@ public class ChunkSection1_13 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/MappingData.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/MappingData.java
index c51cd40dc..b86c5db17 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/MappingData.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/MappingData.java
@@ -5,6 +5,8 @@ import com.google.common.collect.HashBiMap;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import io.netty.util.collection.IntObjectHashMap;
+import io.netty.util.collection.IntObjectMap;
 import us.myles.ViaVersion.util.GsonUtil;
 
 import java.io.IOException;
@@ -14,7 +16,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 public class MappingData {
-    public static Map<Integer, Integer> oldToNewBlocks = new HashMap<>();
+    public static IntObjectMap<Integer> oldToNewBlocks = new IntObjectHashMap<>();
     public static BiMap<Integer, Integer> oldToNewItems = HashBiMap.create();
     public static Map<String, Integer[]> blockTags = new HashMap<>();
     public static Map<String, Integer[]> itemTags = new HashMap<>();
@@ -52,6 +54,17 @@ public class MappingData {
         }
     }
 
+    private static void mapIdentifiers(IntObjectMap<Integer> output, JsonObject oldIdentifiers, JsonObject newIdentifiers) {
+        for (Map.Entry<String, JsonElement> entry : oldIdentifiers.entrySet()) {
+            Map.Entry<String, JsonElement> value = findValue(newIdentifiers, entry.getValue().getAsString());
+            if (value == null) {
+                System.out.println("No key for " + entry.getValue() + " :( ");
+                continue;
+            }
+            output.put(Integer.parseInt(entry.getKey()), Integer.parseInt(value.getKey()));
+        }
+    }
+
     private static Map.Entry<String, JsonElement> findValue(JsonObject object, String needle) {
         for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
             String value = entry.getValue().getAsString();
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/ChunkSection1_9_3_4.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/ChunkSection1_9_3_4.java
index 93e5bd0a6..8539f0f14 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/ChunkSection1_9_3_4.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_1_2to1_9_3_4/chunks/ChunkSection1_9_3_4.java
@@ -153,7 +153,11 @@ public class ChunkSection1_9_3_4 implements ChunkSection {
         }
 
         // Read blocks
-        Long[] blockData = Type.LONG_ARRAY.read(input);
+        //Long[] blockData = Type.LONG_ARRAY.read(input);
+        long[] blockData = new long[Type.VAR_INT.read(input)];
+        for (int i = 0; i < blockData.length; i++) {
+            blockData[i] = input.readLong();
+        }
         if (blockData.length > 0) {
             for (int i = 0; i < blocks.length; i++) {
                 int bitIndex = i * bitsPerBlock;
@@ -245,7 +249,7 @@ public class ChunkSection1_9_3_4 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
@@ -288,7 +292,7 @@ public class ChunkSection1_9_3_4 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/ChunkSection1_9_1_2.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/ChunkSection1_9_1_2.java
index 03bede471..fff7980bd 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/ChunkSection1_9_1_2.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9_3to1_9_1_2/chunks/ChunkSection1_9_1_2.java
@@ -145,7 +145,11 @@ public class ChunkSection1_9_1_2 implements ChunkSection {
         }
 
         // Read blocks
-        Long[] blockData = Type.LONG_ARRAY.read(input);
+        // Long[] blockData = Type.LONG_ARRAY.read(input);
+        long[] blockData = new long[Type.VAR_INT.read(input)];
+        for (int i = 0; i < blockData.length; i++) {
+            blockData[i] = input.readLong();
+        }
         if (blockData.length > 0) {
             for (int i = 0; i < blocks.length; i++) {
                 int bitIndex = i * bitsPerBlock;
@@ -237,7 +241,7 @@ public class ChunkSection1_9_1_2 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
@@ -280,7 +284,7 @@ public class ChunkSection1_9_1_2 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/ChunkSection1_9to1_8.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/ChunkSection1_9to1_8.java
index 77ed52c0a..72a48578e 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/ChunkSection1_9to1_8.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_9to1_8/chunks/ChunkSection1_9to1_8.java
@@ -144,7 +144,7 @@ public class ChunkSection1_9to1_8 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
@@ -187,7 +187,7 @@ public class ChunkSection1_9to1_8 implements ChunkSection {
             }
         }
         for (long l : data) {
-            Type.LONG.write(output, l);
+            output.writeLong(l);
         }
     }
 
diff --git a/pom.xml b/pom.xml
index 8cc37e2db..91a1f9e2f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -98,7 +98,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.0.20.Final</version>
+            <version>4.0.23.Final</version> <!-- Let's break 1.8 -->
             <scope>provided</scope>
             <optional>true</optional>
         </dependency>