Thanks for the suggestion, but Mr. Grip did not work very well. I am sure it would work for a large hole, but these holes were too small to get a workable piece into. BUT, the guy at the hardware store suggested "Screw-It Again." It's a threaded plastic anchor with a very small tip. You screw it into the hole and break it off to size. I used it on two holes securing the grille shell that had badly enlarged holes, and on the seven holes for the sill trim. In both cases I was able to use the correct screws. I don't want to go hyperbolic, but this is a really good solution, needed for a long time, especially for the door trim screws.
Cheers,
CT