<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Jerry N.:
I would bend the door to get a good seal. It won't be completely air tight, but it needs to be snug. For me, the test is whether or not the fire goes out quickly once all the vents have been shut. If it does, then your WSM is tight enough to control temps. When I bought my WSM it would run at about 250 with the vents closed. Bending the door got me to the point where the thermometer reads as low as it goes in about an hour. Note - I'm aware the fire isn't out at that point, but it's certainly on its way. I always have unburnt charcoal after a cook. </div></BLOCKQUOTE>
Very good advice. I'll just add that if the temps still won't die down even after the door seems to fit properly, another possibility is an "out of round" condition.