I stored my boat outside (under a \"breathable\" cover) during the winter months. Now it seems that a dark mildew has attacked my vinyl seats (and seat seams) and even the beige (I think its some type of rubber) Moomba steering wheel. I\'ve tried Fantastik - the Moomba \"recommended\" cleaner and that removes about 80% of the mildew - the final 20% is almost impossible to remove with Fantastik. Does anybody have an answer for something that works more easily and doesn\'t later cause the vinyl to dry out and crack like some cleaners I\'ve heard of?