Re: cracked decals
BB - I wish you better luck than I had with the same problem. I used lighter fluid, lacquer thinner, acetone, Goof-Off, gasoline and even some stuff I got from the auto paint store "guaranteed" to remove the old style wood panel decals. I even used a razor blade scraper and a heat gun. What I got is some scratches and gouges (my fault), adhesive residue, and a ghost image of the decal on the side of the motor home.
What I plan to do is try to get the rest of the adhesive off, tape off the area following the ghost outline, sand, prime and paint.
I know I can buy the decals from the RV repair shop in my little home town in FLA. I could even have them apply it and it would probably be as good as original. Just don't know the cost. You can probably order the decals on-line from one of the RV parts suppliers.
Like I said, I wish you better luck then I had. Post back and let us know how you do.