Thanks for the tool and thanks Geodav for the video will help many people using the default skeleton and mesh.
My issue is the importing. I cannot import my character which I have put through the Mixamo Auto-rigger into blender the twist bones and IK bones etc… make it impossible to animate it in Blender. Likewise with the exporting the default Mannequin to blender (however the above rig from GeoDav has fixed that side). If you import it to Blender and export it, it does work in unreal. It’s just because the bone/rig messes up you cannot animate in Blender, you would have to animate in engine and you have much less control to do better animations.
Basically you cannot use an autorigged Mixamo character with your own mesh. I use Mixamo autorigger because skinning is an art in itself and Mixamo does a fairly good job at it in less than a few minutes. No solution to this. Has put character on hold.