Ok. I didn’t know how to post photos of the piece that popped off, so I created a Craigslist ad with 4 pictures. One shows the large trim piece sitting in my office. The others show trunk views. You can see where it is supposed to be attached through the rear eindhield. There are 3 round nuts on each side which attach by screws to to moving arm on each side. It seems they have all popped out, leaving the 3 round holes in the plastic piece on each side. Anyone have any ideas.
https://honolulu.craigslist.org/mau/pts ... 45256.html