The decals on our Montana went bad. I removed them myself. The vinyl businesses wanted $100/hour to remove them. Found a "large stripe removal tool" from Eastwood or similar automotive paint business worked very well. It fits a standard variable speed drill or die grinder. I found if I kept the speed of the drill to a very slow speed the wheel worked better than at high speed. Then 3M adhesive remover took the residue off in short order. A 6" Ryobi random orbital polisher and a fine rubbing compound got rid of most of the shadows evened out.