Found the best tutorial series skeletal meshes created in Blender setup and export to U4 >>

Just heads up everyone who uses Blender found the best tutorial on skeletal mesh created in
Blender, fbx export, getting around the “bones too small” error when physics asset is created
and import into U4.
This one is also the most up to date )))

https://www.youtube.com/watch?v=LhWYwVPd2Oo