I was wondering if anyone here has tried polishing the black finish radiator spport the run along the underhood of vehicles. I just noticed the other day mine is starting to look kind of swriled. I don't think I will be able to do much by machine, so I'd have to do it by hand. Plus the fact is the finish seems to be pretty soft, I know that I have put a few swirls in myself by using too much pressure with a microfiber applictor before. Any product suggestions for this kind of application?