By the way, make sure you remove every last bit of that old sealant - it does sound like silicone, based on your description. I used a utility knife blade to scrape away all the old adhesive from the aluminum frame and the perimeter of the fiberglass opening, followed by sandpaper to really get it clean, followed by a solvent wipe.
- Bill T.
- Richmond, VA
"Twenty years from now you will be more disappointed by the things you didn't do, than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."
- Mark Twain