I was trying to tighten up the joints on my Classics Starscream and tightened the wing right off. I just need the hinged parts on the wing flaps, the wings themselves unscrew. Maybe someone has a junker or leftovers from a kitbash? It looks like it has to be a non-conehead mold; their torso wings don't unscrew.
I could get them by getting the coronation kit, but I don't know that I want to do that just for the hinges: