I would like to clean the pop top cover (Winter cover?), for my '83 Catalina 25. The white vinyl outside is in great shape, but the canvas/cloth underside is mold-spotted in places.Has anyone washed one of these in the "commercial" front-loading washing machines at the laundromat? And if so, what detergent is best used?Or do I lay the thing out, spray the mold-spotted side with Tilex or something similar and hose it?I want it clean, but I do not want to damage it in any way as it appears to be original equipment.DC