The previous owner of my bike put on some relfective stickers on the forks and a couple other spots of the bike and i want to remove them but the problem is they are brittle now and crack when you try to peel them off. Does anyone know of a good solvent that i can wipe on with a rag that will melt them off? I'm thinking maybe Acetone? I don't want anything too abrusive or to have to scrap or brush them off since that could scratch the metal. Any suggestion on something i can use that isn't hard to find?