I need a little help. I was cooking Salmon on my egg Sunday. When I was finished I left all the vents open to burn down all my charcoal so I could give it a good cleaning the following day. The next day I went out to my egg and the lid will not open. I have pulled on it and everything. It won't budge. I did replace the gasket a month or so ago and used some adhesive, but I have cooked on the egg several times since with no problems. Any suggestions?