I bought a 36' Diesel Monaco Windsor a year ago from Florida. The Rubber top had been done about a year before I bought it. Now on the metal curved area that goes from the top to the side fiberglass panels I have what looks like mildew. It should be white like the room but it looks terrible. Used power sprayer with bleach and got some improvement but that's it. The coach really looks bad since that is at the the very top above my awnings. Does anyone know if I can get that out or can I paint it with something. It just detracts so bad from the look of the coach.