I am cleaning up some painted steel rims to sell to a friend. When I took the tires off the rims there was more than the expected rust along the bead area and the rim edge and around the valve stem hole. The tires held air so I will assume the rims are acceptable for use. I took a wire wheel to those areas and broke the rust loose and then I treated it with a rust stopper which turns the rust to a black oxide. My question is; Is there a product I can spread over the pitted areas , sand down, prime and still have it hold up without cracking and popping loose and still look presentable? Thanks Mike