I have a St. Croix Hastings stove which has been going strong for years. I replaced the gasket once, but I did the dollar bill test and there are some loose spots. Will that lead to the glass getting dirty quick? I've cleaned the stove well. The flame pattern is very good and sharp. Not really getting black glass, but in less than a day I'm getting a lot of brown soot, especially towards the top and sides of the glass. I've ordered a replacement gasket and just wondering if that will help. Thanks.