I'm not sure what they call the black strips that run from the windshield to the rear window on either side of the roof, but I think they call them "roof moldings"? Anyways, can anyone recommend the best way to clean them, and with what? My 2012's roof moldings are badly corroded and discolored and look horrible. I've already tried Mothers' Back to Black and all that did was make them shiny, but it did nothing to remove the corrosion. Any advice would be appreciated. Thanks!