My high maintenance cat stove required, once again, nothing. I took another look at cat gasket and gave the door the dollar bill check, that's it. My only gripe is that I vacuumed too much ash away from the ash dump plug. I wasn't able to dial it down as much as I like to. Got all the way up to 74 in here this morning because it was sucking air up thru the bottom of the stove. Stupid ash holes.