Painter dudes... Can you flatten clearcoat? Can it be used over old paint and primer to save the patina and look that's taken years to appear, without it allowing it to rust further? I'm not a painter, but I LOVE the look of this truck (the old battered soldier thing)... and would like to save it. After a little bodywork, how can this be done? Or do i have to continually monitor further surface rust and rot? Kinda looking for a new home for a certain 454 I got.... whatta ya think?