"use an over-the-fire air supply to cut down on smoking when the damper is shut. It's merely a plate that is spaced away from the front of the boiler."
I can't picture where the plate is located. Is it something that you move or adjust? Sorry, I just can't visualize what it is like. Is it inside or outside the unit? I assume it does not use forced air, right? Hey, free wood makes all the difference in the world. Mine was free for years, that's 1 reason I never thought about burning anything else until now. What I can get for free is very limited. In fact I spent most of today cutting down small maple trees that have spread too much in my yard. I just put up a temporary garage and also plan on doing a stone patio and installing a picket fence to protect my dogs. So it seems I have been into the wood cutting mode lately.