diff --git a/src/main/java/refinedstorage/api/storage/CompareUtils.java b/src/main/java/refinedstorage/api/storage/CompareUtils.java
index 7ca1a671b..937e804bd 100755
--- a/src/main/java/refinedstorage/api/storage/CompareUtils.java
+++ b/src/main/java/refinedstorage/api/storage/CompareUtils.java
@@ -5,17 +5,43 @@ import net.minecraftforge.oredict.OreDictionary;
 import org.apache.commons.lang3.ArrayUtils;
 
 /**
- * Comparison utils.
+ * Utilities for comparing {@link ItemStack}.
  */
 public final class CompareUtils {
     public static final int COMPARE_DAMAGE = 1;
     public static final int COMPARE_NBT = 2;
     public static final int COMPARE_QUANTITY = 4;
 
+    /**
+     * Compares two stacks by NBT, damage and quantity.
+     *
+     * @param left  The left stack
+     * @param right The right stack
+     * @return Whether the left and right stack are equal
+     */
     public static boolean compareStack(ItemStack left, ItemStack right) {
         return compareStack(left, right, COMPARE_NBT | COMPARE_DAMAGE | COMPARE_QUANTITY);
     }
 
+    /**
+     * Compares two stacks by NBT and damage.
+     *
+     * @param left  The left stack
+     * @param right The right stack
+     * @return Whether the left and right stack are equal
+     */
+    public static boolean compareStackNoQuantity(ItemStack left, ItemStack right) {
+        return compareStack(left, right, COMPARE_NBT | COMPARE_DAMAGE);
+    }
+
+    /**
+     * Compares two stacks by the given flags.
+     *
+     * @param left  The left stack
+     * @param right The right stack
+     * @param flags The flags to compare with
+     * @return Whether the left and right stack are equal
+     */
     public static boolean compareStack(ItemStack left, ItemStack right, int flags) {
         if (left == null && right == null) {
             return true;
@@ -50,6 +76,13 @@ public final class CompareUtils {
         return true;
     }
 
+    /**
+     * Compares the NBT tags of two stacks.
+     *
+     * @param left  The left stack
+     * @param right The right stack
+     * @return Whether the NBT tags are equal
+     */
     public static boolean compareNbt(ItemStack left, ItemStack right) {
         if (!ItemStack.areItemStackTagsEqual(left, right)) {
             if (left.hasTagCompound() && !right.hasTagCompound() && left.getTagCompound().hasNoTags()) {
@@ -64,10 +97,13 @@ public final class CompareUtils {
         return true;
     }
 
-    public static boolean compareStackNoQuantity(ItemStack left, ItemStack right) {
-        return compareStack(left, right, COMPARE_NBT | COMPARE_DAMAGE);
-    }
-
+    /**
+     * Compares two stacks and checks if they share the same ore dictionary entry.
+     *
+     * @param left  The left stack
+     * @param right The right stack
+     * @return Whether the stacks share the same ore dictionary entry
+     */
     public static boolean compareStackOreDict(ItemStack left, ItemStack right) {
         if (left == null && right == null) {
             return true;
diff --git a/src/main/java/refinedstorage/gui/GuiBase.java b/src/main/java/refinedstorage/gui/GuiBase.java
index 932136f4c..5fd1d7ebe 100755
--- a/src/main/java/refinedstorage/gui/GuiBase.java
+++ b/src/main/java/refinedstorage/gui/GuiBase.java
@@ -279,7 +279,7 @@ public abstract class GuiBase extends GuiContainer {
         return guiTop;
     }
 
-    public static int calculateOffsetOnScale(int pos, float scale) {
+    protected int calculateOffsetOnScale(int pos, float scale) {
         float multiplier = (pos / scale);
 
         return (int) multiplier;