FWIW, once a piece of trim has come off it won't ever stick again like it should. Castor residue gets in every seam of a glow plane and seeps under the covering, making it come unstuck. A really great cleaning job with denatured alcohol and an absorbent towel (not a paper towel) can get a new piece to stick, but if you want to reuse an old piece you'll be better off breaking out the CA and just gluing it on.