I done! I replaced the controls (Savannah) , auger, fan, ignitor three times, added a diffuser and finally I'm over this piece of #*@! Last night I was fininishing up a batch of bacon and once more, the smoke came rolling up out of the hopper as the box temp went down. I refuse to take this thing apart and troubleshoot one more time. I plan on replacing with a Rec Teq 590 or Camp Chef same size. I read good things about both and I would greatly appreciate feedback on these smokers from guys like you who really use the stuff. Many thanks.