Ive upgraded to a 22” wsm and an atc with it. Had the atc about six months and love it. The only other mod I’m doing at the moment is the arbor fab charcoal ring. Between the atc and the additional charcoal capacity I’m figuring I’m good for 20 plus hours with nothing more then stirring coals and water top off. Do the stainless steel doors make the smoker more efficient and in everyone’s opinion does it save enough fuel to justify the cost? What if any other mods does everyone recommend?