I recently purchased a summer heat 2400, it burns great but the problem is it burns to great. It doesn't really over fire but I can fill the firebox and normally only get about a 4 hour burn. I did the dollar bill test this morning and I was able to pull it out in 3 different locations. I am assuming that this is one of my problems if not the problem. I have never had to deal wit the this before so what do I need to now? Do I need to get a bigger gasket for around the door? Thanks for the help.