After some brain storming and testing with DTuppFN he suggested changing BlockAll to FortStaticMesh in Collision Presets and this instantly brought back mantling to the items that did not previously work so good result, things working now
After some brain storming and testing with DTuppFN he suggested changing BlockAll to FortStaticMesh in Collision Presets and this instantly brought back mantling to the items that did not previously work so good result, things working now