[Christien]

Ok, solved myself. It is indeed possible to get the trim back in, at least most of it. I applied vaseline to the groove, wrapped a small piece of pine (about 1/2" thick, 3" wide) in a dish towel and hammered away. I got all of it back in except the lower corner, which was lifted when I bought the car. That corner wouldn't go back in because it was a little bent.

So it looks like it's time to pull the glass out and replace the trim with new stuff. Oh well, it'll get me through the summer.