Sometimes, the barrel or even the top of the WSM can be a bit out of round from shipping. Measure carefully, then just (wearing OLD clothes) hug the top or barrel to bend it round. Go easy, and check as you go. It WILL go back in to round with a little careful "help".
My 18.5" was near perfect and after using a few times no longer leaks smoke.
My 14.5" lid was out of round and had to be "hugged" a couple of times. Now, it works fine.
I didn't find it necessary to add the gasket kit to either. That is not to knock the gasket kit or the replacement door but I just didn't need to do that.
I LOVE my WSM's, too...
Keep on smokin',
Dale53![]()