OK, my big King Kooker loses smoke around the door, more than actually flows out of the chimney, so I'm thinking this affects the smoke flow by not passing all the way up through the chamber and kissing the meat....I'm wondering what kind of material I could put around the inside of the door that would help seal the door tighter. Obviously it would have to be heat proof. I was thinking of the stripping on the inside of an oven, but I think that it would be too thick...any ideas???