I am not worried about smoke getting out. I just want to seal up the air so it only goes in through the vents in the bottom and out through the top vent. It will be much easier to control the temp with less variation.
I just received my new 22" WSM and I can already tell I want to seal the side door up better. I was told to get some nomex and some 3M 77 spray to seal it up good. Does that sound like a good idea? Where do I get some nomex?