I just noticed that my foot wells are blistering slightly. I store outside but under Yama custom covers. Water permeates and does end up sitting in foot wells. I live in a very dry climate so we don't get much rain. I do try to drain them periodically after a rain storm. Is this something I should be concerned about? Is it a costly repair? After researching the internet, it appears that gel-coat will blister if left in moisture. Any thoughts?