A 22.5 WSM is pretty new to me (6 smokes so far). I was a little concerned when I found that I couldn't put the fire out by closing everything. In fact, that's what I did to get a low temp for smoking. I rearranged the location of the door (turned the middle section) so the sun would be behind me, and to my surprise the fire went out this time. I couldn't see any out of round, but I guess there's a little in both the base and center section, and turning one kind of fixed it. Maybe now I can get some lower temp cook time.