Oh, I forgot to mention, that in order to successfully export the BlenderUT3 Rig and Custom character from Blender to UE4 you need to use the updated FBX Exporter to stop it from creating an additional Bone at the top of the Skeleton hierachy. See Geodavs Tutorial here:https://www.youtube.com/watch?v=6iOScBCBdEM&list=PLXWXR2pLy_hV6UwhLjirhNnelWpOzGWRI&index=3