Im a new BGE xl owner. I did 3 cooks where I kept the temp to between 350-400. Then I did a pizza and got the temp up to a max of 550-600. When I was done, I noticed my gasket looked fried. I did some steaks a couple days later and got the temp up to around 700 pretty easy, so I don't think the seal is bad. I'm just worried that it might get worse. Is this normal? Is it something I should worry about and try to replace? I went to the dealer that I bought it from and looked at their demo model and the gasket looked to be in perfect shape - very unlike mine. Any advice???