I'm attaching 3 pictures: one of the stove, one of the "drop down" air intake door from below and one of the air intake adjustment on the back of the left door. The knob on the right door is a phony with the one in the photo, on the left door, doing all of the air adjustment. As I figure it, the left knob adjusts the length of the screw and when the door is shut it pushes on the tab shown and opens the air input as determined by the knob setting. It is shown in the closed position. Screwing the knob all the way in causes the tab to push the air input shut, as well. I have no idea what the drop down door below is for, except to close when burning with the doors open as with a fireplace. As I said before, as near as I can tell, I have the air adjusted for full on and yet the stove acts like the air is set for minimum burn rate.
After more fooling around, I've realized that it won't even burn hot when the doors are open, so the problem must be in the chimney. I plan to take the inside pipe apart and re-assemble it using sheet metal screws for a titer fit. Then say a little prayer to the stove gods.
Burning fir and pine, we need to be able to “blow out” the creosote on a regular basis or risk a chimney fire. Here in Idaho we don’t have all the nice hardwoods like you do back east.
Thanks for your reply