Ok. I put a new 1/4" gasket on and the door closes now. Thanks guys. Also, I was wondering if putting up a heat shield will also reduce clearances for a single wall stove pipe if the shield goes all the way up the wall. Has anyone figured out how close I can get the old 602 to the wall? How about if I put it in at a 45 degree angle? The old manual doesn't say anything about that.