Jim,
I think you can't fix them as it is impossible to separate lower plastic bit from upper metal/'wood' bit
What I can suggest is to return them back to A8parts and ask to change them to fully plastic ones. You need those without wood effect metal stuff on them. Color is not important. I bet they will come in terrible condition. Then bring them to people who paint cars and ask them to paint those plastic things 'soul black' or whatever colour you need. Of course, matte finish and not lacquered. Body shop will understand. The beauty of this approach is that you can repair those things while they get scratched with time, so this solution is forever.
I have repaired that way L-shaped seat memory button surrounds in front doors and very happy with result.