I started to ask a couple questions about this in the Dirty Window thread but I wanted to ask it to a wider audience. On the lowest setting, our Osburn 45mf creates a great deal of brownish soot on the upper third of the glass. The flame is generally QUITE low but doesn't appear smoldery in the burn pot. There is also a wood-smoky smell to the heat as it comes out of the blower. It's not overpowering, but noticeable as compared to even the next highest setting. On the 2nd setting, the sootiness decreases dramatically and the smell disappears completely. Is this a damper setting situation? I'm going to the stove shop to talk to them about this and other issues but I figured I'd ask here too, as you folks are a tremendous source of knowledge.