Hi there, Been burning seriously since 07. Last stove was PE Summit...great stove went so soap for even heating. Anyway wood is always 3 year season oak. The setup: Temp set up in a polebarn while we are building the house. Chimney setup is absolute crap with barely any draft. Singlewall up 3.5' 90 back 6' 90 up 6ft. I know this is a horrible horrible setup and it is TEMP the proper setup will be in the house (double wall with inline damper, up to class A total of 24ft. Anyway,.....I load the stove up at night, get it charred up and cut air back in 3rds. Nice slow rolling secondaries going like it should be. Stove top about 400. Well 2-3 hrs later the flames are just rolling, temps climb up to 600 WAY too much action in the firebox So we know there is barely a draft so no over drafting issues. This thing is sucking air fom somewhere! I would hate to hook it up to 23ft I need help to figure out where its sucking air and how to fix. Bought new this fall. Burning with grate closed, all doors closed, air fully closed and temps climb on me. I would say thats running. Please help this gal out! Thanks!