OK, after a couple summers of doing nothing different I came to find my off-white leather upholstery all covered with spots that appear like mold. I had my boat covered for about 10 days as we had rain and storms every day and when I uncovered her this is what I found. I have tried to clean it off with leather cleaner, armor-all, and soapy water with a little bit of bleach in it, nothing really worked. Is there ANYTHING i can use to get the seats back to looking good? This isn't the first time we had rain like this and I never had this issue before so I am lost. Anyone??? We normlly take the boat out every week or two and clean it after and between. So, i don't know what caused this either.