diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/logger/AbstractLogger.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/logger/AbstractLogger.java
index 8c1e2a0b..fafc4731 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/logger/AbstractLogger.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/logger/AbstractLogger.java
@@ -24,13 +24,12 @@
  */
 package de.bluecolored.bluemap.core.logger;
 
-import java.util.concurrent.TimeUnit;
-
 import com.github.benmanes.caffeine.cache.Cache;
 import com.github.benmanes.caffeine.cache.Caffeine;
-
 import de.bluecolored.bluemap.core.BlueMap;
 
+import java.util.concurrent.TimeUnit;
+
 public abstract class AbstractLogger extends Logger {
 
     private static final Object DUMMY = new Object();
@@ -40,7 +39,7 @@ public abstract class AbstractLogger extends Logger {
     public AbstractLogger() {
         noFloodCache = Caffeine.newBuilder()
             .executor(BlueMap.THREAD_POOL)
-            .expireAfterWrite(1, TimeUnit.HOURS)
+            .expireAfterWrite(10, TimeUnit.MINUTES)
             .maximumSize(10000)
             .build();
     }
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_13.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_13.java
index 6b18ca14..fceb4aa7 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_13.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_13.java
@@ -280,14 +280,14 @@ public class Chunk_1_13 extends MCAChunk {
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class HeightmapsData {
+    public static class HeightmapsData {
         @NBTName("WORLD_SURFACE") private long[] worldSurface = EMPTY_LONG_ARRAY;
         @NBTName("OCEAN_FLOOR") private long[] oceanFloor = EMPTY_LONG_ARRAY;
     }
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class SectionData {
+    public static class SectionData {
         private int y = 0;
         private byte[] blockLight = EMPTY_BYTE_ARRAY;
         private byte[] skyLight = EMPTY_BYTE_ARRAY;
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_16.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_16.java
index 0dc3cbbe..2d7ef716 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_16.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_16.java
@@ -268,14 +268,14 @@ public class Chunk_1_16 extends MCAChunk {
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class HeightmapsData {
+    public static class HeightmapsData {
         @NBTName("WORLD_SURFACE") private long[] worldSurface = EMPTY_LONG_ARRAY;
         @NBTName("OCEAN_FLOOR") private long[] oceanFloor = EMPTY_LONG_ARRAY;
     }
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class SectionData {
+    public static class SectionData {
         private int y = 0;
         private byte[] blockLight = EMPTY_BYTE_ARRAY;
         private byte[] skyLight = EMPTY_BYTE_ARRAY;
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_18.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_18.java
index 6c030492..cf173605 100644
--- a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_18.java
+++ b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/world/mca/chunk/Chunk_1_18.java
@@ -221,7 +221,7 @@ public class Chunk_1_18 extends MCAChunk {
 
             int id = blocks.get((y & 0xF) << 8 | (z & 0xF) << 4 | x & 0xF);
             if (id >= blockPalette.length) {
-                Logger.global.noFloodWarning("palette-warning", "Got block-palette id " + id + " but palette has size of " + blockPalette.length + "! (Future occasions of this error will not be logged)");
+                Logger.global.noFloodWarning("palette-warning", "Got block-palette id " + id + " but palette has size of " + blockPalette.length + ". (Chunk");
                 return BlockState.MISSING;
             }
 
@@ -234,7 +234,7 @@ public class Chunk_1_18 extends MCAChunk {
 
             int id = biomes.get((y & 0b1100) << 2 | z & 0b1100 | (x & 0b1100) >> 2);
             if (id >= biomePalette.length) {
-                Logger.global.noFloodWarning("biome-palette-warning", "Got biome-palette id " + id + " but palette has size of " + biomePalette.length + "! (Future occasions of this error will not be logged)");
+                Logger.global.noFloodWarning("biome-palette-warning", "Got biome-palette id " + id + " but palette has size of " + biomePalette.length + ".");
                 return Biome.DEFAULT.getValue();
             }
 
@@ -271,14 +271,14 @@ public class Chunk_1_18 extends MCAChunk {
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class HeightmapsData {
+    public static class HeightmapsData {
         @NBTName("WORLD_SURFACE") private long[] worldSurface = EMPTY_LONG_ARRAY;
         @NBTName("OCEAN_FLOOR") private long[] oceanFloor = EMPTY_LONG_ARRAY;
     }
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class SectionData {
+    public static class SectionData {
         private int y = 0;
         private byte[] blockLight = EMPTY_BYTE_ARRAY;
         private byte[] skyLight = EMPTY_BYTE_ARRAY;
@@ -288,14 +288,14 @@ public class Chunk_1_18 extends MCAChunk {
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class BlockStatesData {
+    public static class BlockStatesData {
         private BlockState[] palette = EMPTY_BLOCKSTATE_ARRAY;
         private long[] data = EMPTY_LONG_ARRAY;
     }
 
     @Getter
     @SuppressWarnings("FieldMayBeFinal")
-    protected static class BiomesData {
+    public static class BiomesData {
         private String[] palette = EMPTY_STRING_ARRAY;
         private long[] data = EMPTY_LONG_ARRAY;
     }