When you run your stove on low and med, how high is the the flame? At times, mine is barely out of the pot. The manual says to adjust to 4-6" on high. With the feed rod maxed out, that is all the flame height I get. Is this normal? What's bothering me is whether I sealed the flue damper to tight and their is not enough draw from the stack.(I sealed it pretty good not wanting the stack to draw the air out of the house). No black soot. I get some brown haze on the door. I'm hearing of some 10 - 12" flames on some stoves and wondering if I have issues. Could it be a pellet delivery issue? On low, should the flame be above the pot.? Thanks for any response or suggestions.