Animation Retarget Arms Not Functioning

Hiya,
I’ve recently downloaded a bunch of animations from Mixamo and wanted to retarget them to SK_Quinn mesh, I have created an IK_Rig, IK_Retarget, and I have made it so the two meshes are in the same position. The animation seems to work well… apart from the functionality of the arms :sweat_smile:
I was wondering if anybody had any idea of somewhere I may have gone wrong, or if there were any quick fixes?
Thanks!