diff --git a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksAvlBalancedTreeMethodsBase.cs b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksAvlBalancedTreeMethodsBase.cs
index 203692dcf..0163aade5 100644
--- a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksAvlBalancedTreeMethodsBase.cs
+++ b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksAvlBalancedTreeMethodsBase.cs
@@ -521,6 +521,29 @@ protected virtual bool GetLeftIsChildValue(TLinkAddress value)
         //return Bit<TLinkAddress>.PartialRead(value !=  4, 1, default);
     }
 
+    /// <summary>
+    ///     <para>
+    ///         Determines whether the left child of a node is a child (not a thread) using size comparison.
+    ///     </para>
+    ///     <para></para>
+    /// </summary>
+    /// <param name="node">
+    ///     <para>The node.</para>
+    ///     <para></para>
+    /// </param>
+    /// <returns>
+    ///     <para>The bool</para>
+    ///     <para></para>
+    /// </returns>
+    [MethodImpl(methodImplOptions: MethodImplOptions.AggressiveInlining)]
+    protected virtual bool GetLeftIsChildBySizeComparison(TLinkAddress node)
+    {
+        var nodeSize = GetSize(node);
+        var left = GetLeft(node);
+        var leftSize = GetSizeOrZero(left);
+        return leftSize > TLinkAddress.Zero && nodeSize > leftSize;
+    }
+
     /// <summary>
     ///     <para>
     ///         Sets the left is child value using the specified stored value.
@@ -567,6 +590,29 @@ protected virtual bool GetRightIsChildValue(TLinkAddress value)
         //return Bit<TLinkAddress>.PartialRead(value !=  3, 1, default);
     }
 
+    /// <summary>
+    ///     <para>
+    ///         Determines whether the right child of a node is a child (not a thread) using size comparison.
+    ///     </para>
+    ///     <para></para>
+    /// </summary>
+    /// <param name="node">
+    ///     <para>The node.</para>
+    ///     <para></para>
+    /// </param>
+    /// <returns>
+    ///     <para>The bool</para>
+    ///     <para></para>
+    /// </returns>
+    [MethodImpl(methodImplOptions: MethodImplOptions.AggressiveInlining)]
+    protected virtual bool GetRightIsChildBySizeComparison(TLinkAddress node)
+    {
+        var nodeSize = GetSize(node);
+        var right = GetRight(node);
+        var rightSize = GetSizeOrZero(right);
+        return rightSize > TLinkAddress.Zero && nodeSize > rightSize;
+    }
+
     /// <summary>
     ///     <para>
     ///         Sets the right is child value using the specified stored value.
diff --git a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksSourcesAvlBalancedTreeMethods.cs b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksSourcesAvlBalancedTreeMethods.cs
index 967027a9a..9d5435cb7 100644
--- a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksSourcesAvlBalancedTreeMethods.cs
+++ b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksSourcesAvlBalancedTreeMethods.cs
@@ -173,7 +173,7 @@ public LinksSourcesAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
 
         /// <summary>
         /// <para>
-        /// Determines whether this instance get left is child.
+        /// Determines whether this instance get left is child using size comparison.
         /// </para>
         /// <para></para>
         /// </summary>
@@ -186,7 +186,7 @@ public LinksSourcesAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
         /// <para></para>
         /// </returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        protected override bool GetLeftIsChild(TLinkAddress node) => GetLeftIsChildValue(GetLinkReference(node).SizeAsSource);
+        protected override bool GetLeftIsChild(TLinkAddress node) => GetLeftIsChildBySizeComparison(node);
 
         /// <summary>
         /// <para>
@@ -207,7 +207,7 @@ public LinksSourcesAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
 
         /// <summary>
         /// <para>
-        /// Determines whether this instance get right is child.
+        /// Determines whether this instance get right is child using size comparison.
         /// </para>
         /// <para></para>
         /// </summary>
@@ -220,7 +220,7 @@ public LinksSourcesAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
         /// <para></para>
         /// </returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        protected override bool GetRightIsChild(TLinkAddress node) => GetRightIsChildValue(GetLinkReference(node).SizeAsSource);
+        protected override bool GetRightIsChild(TLinkAddress node) => GetRightIsChildBySizeComparison(node);
 
         /// <summary>
         /// <para>
diff --git a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksTargetsAvlBalancedTreeMethods.cs b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksTargetsAvlBalancedTreeMethods.cs
index deb9cdb5c..25d635b41 100644
--- a/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksTargetsAvlBalancedTreeMethods.cs
+++ b/csharp/Platform.Data.Doublets/Memory/United/Generic/LinksTargetsAvlBalancedTreeMethods.cs
@@ -173,7 +173,7 @@ public LinksTargetsAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
 
         /// <summary>
         /// <para>
-        /// Determines whether this instance get left is child.
+        /// Determines whether this instance get left is child using size comparison.
         /// </para>
         /// <para></para>
         /// </summary>
@@ -186,7 +186,7 @@ public LinksTargetsAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
         /// <para></para>
         /// </returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        protected override bool GetLeftIsChild(TLinkAddress node) => GetLeftIsChildValue(GetLinkReference(node).SizeAsTarget);
+        protected override bool GetLeftIsChild(TLinkAddress node) => GetLeftIsChildBySizeComparison(node);
 
         /// <summary>
         /// <para>
@@ -207,7 +207,7 @@ public LinksTargetsAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
 
         /// <summary>
         /// <para>
-        /// Determines whether this instance get right is child.
+        /// Determines whether this instance get right is child using size comparison.
         /// </para>
         /// <para></para>
         /// </summary>
@@ -220,7 +220,7 @@ public LinksTargetsAvlBalancedTreeMethods(LinksConstants<TLinkAddress> constants
         /// <para></para>
         /// </returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        protected override bool GetRightIsChild(TLinkAddress node) => GetRightIsChildValue(GetLinkReference(node).SizeAsTarget);
+        protected override bool GetRightIsChild(TLinkAddress node) => GetRightIsChildBySizeComparison(node);
 
         /// <summary>
         /// <para>