I just bought some fiberglass fenders. They were painted, but then for some reason the guy spray can primered them. Not sure why. Is there a way to bring them down to the gel coat easily, or just sand very carefully?? Is there any kind of paint stripper that will work on fiberglass, but won't eat up the gel coat? I think it would be impossible for a product to do that. Is sanding the only way, or is it really necessary to bring down to the gel coat? I found that a scotch bright pad will take the primer coat off, but the paint is still there. There are some places where the paint has started to peal. Thanks.