My baro works fine. Maybe I'm impatient
It just doesn't allow my unit to create a large amount of heat. With the setting (or weight) on the highest set point, the draft is .07" wc. I have to use foil to create a stronger draft thus more heat. With my ash pit damper wide open and foil on the damper, the draft max's out at 1.5" wc. Right now, I just loaded the unit for the night, ash pit damper wide open, draft sitting at 1.3 wc. Once I damper her down to two turns out from tight, the draft will settle down to .07" wc.
I understand I run the risk of burning dry but it's more hassle than it's worth . And besides, burning dry is a good thing every now & then. Gives you a chance to clean out all of the waste. Now if I go away, maybe I'll pull the foil. My wife likes it cold. I'm a fairy, I like it warm. Notes: I did clean the liner last Nov. It was coated with fly ash. I do have a 6" corrugated. I do not get any smoke in the room with the door open. The 8" square flue allowed the draft to collapse after 6 or 7 hrs of operation when the fire was on its downswing. I can easily maintain the lightest draft . I just cannot control the upper 25% with the baro. So, it's been foiled. My firebox is 18" x 13" or 20% reduced with a 8" piece of SS C-channel and firebrick.