I am starting my 2nd season but I am still confused about the difference/relationship between the adjustable slide damper bar and combustible air settings on the panel. Again, I have never had anyone use a magnahelic gauge to properly set up the air because (unless someone chimes in with a name) there is no one in Chittenden county Vermont ( Burlington area) who does this. My slide damper is about 3/4 pulled out and I see no difference with my flame if I have my combustion flame setting on the lowest setting or the highest. I can only tell you that after about 3 days, I have a fairly black arc on my glass but it is easily removed with paper towel and water. I did just have my Chimney flue cleaned and I was told that for a usage of 3+ tons the flue looked in great shape with an even light gray coating. Sometimes I feel like I want to run outside to my OAK, with the cover removed....and see where my air flapper is with different settings. After the stoves initial run up "before" the convection blower kicks in, I have a huge flame that extends beyond either side of the burn pot. But once the convection blower kicks in and the stove is now heating my house I seem to have a pretty small flame. My defaults setting are usually, Convection air on 3, Pellet feed on 3 and combustion air on 3. Sorry for the long post.... Thanks, Bill