For some reason I'm having a very difficult time replacing the gasket. I put a new gasket on two months ago & it has already come apart. Can someone give me the inside secret on installing a new gasket? I did not add any adhesive, I just used the regular adhesive backing that comes already attached to the gasket. I heard from dealer to use 3m 77 but if you read the specifics 77 does not hold up against high heat & can be a flammable hazard.