Hoping someone can help me out. I took the top off of our Oslo to replace the baffle and insulation blanket. In the process of doing that the gasket on the top started falling off, it appeared that there wasn't any cement holding it in, is this normal? I started laying out a new gasket to replace it since it looked shredded on the corners and it appears to just stay in place and I'm wonder if I need to use gasket cement or not. Thanks!