Trying to attach sockets to sockets (or SkeletalMesh to sockets)

Addendum: I re-exported all of the models from Blender, just to make sure the settings were all the same. In addition, I also moved the objects so that the point I want to attach it by (the bone) is at the origin. Now it’s disfigured as well as flipped - are the components even attaching to the bones at all?