diff --git a/CreoManager.cpp b/CreoManager.cpp
index 0a7a0a1..294e5b9 100644
--- a/CreoManager.cpp
+++ b/CreoManager.cpp
@@ -1780,8 +1780,8 @@ CreoManager::ShellAnalysisResult CreoManager::AnalyzeShellFeaturesEnhanced(const
                     }
                 }
 
-                // Apply user preferences
-                if (request.preserve_external_surfaces && is_outer_component) {
+                // Apply user preferences (skip for specific internal models)
+                if (request.preserve_external_surfaces && is_outer_component && !isSpecificInternal) {
                     item.confidence = 0.0;  // Force keep
                 }