I’ve been burning this stove with tightly packed full loads of Oak at the fully closed #0 air setting. Still have flame in the box although slow and lazy. The stove seems controlled and doesn’t run away, flue temps are 500-600 range an hour in. Not sure why the flames aren’t snuffed out with a fully closed air setting? Also not sure why I can’t get over a 10 hour burn when my previous Woodstocks easily went 12+? I checked for leaks with incense stick and door seal passed dollar bill test and also tightened down the bypass. Maybe my Oak is too dry and off gassing too fast? Just mixed in some Aspen with the Oak for this evenings load to see if it acts any different.