Ok it has been mild again & we are doing better with the stove. I guess I was quite worried about building creosote with low flue temps but you guys don't seem to see that as a problem. So what I have been doing is getting the stove going really good, get about 1" to 2" of hot coals, then keep two to three sticks of wood on the coals with the air adjustment 80% to 100% closed. House is comfortable even with 40 degrees outdoor temps.