Just installed a nc30 and if we don't keep the air shut right down it will burn with stove top temps at 650 or more.. It has gotten to 750 a few times.We have the air wide open till the wood gets going, usually 5-10 minutes then we shut it down all the way and it cruises about 600.If I fill the box full it gets hotter than I feel safe with. How does everyone else work thier air control?I wouldn't want to load it full, get it going and go to bed. I think it would get too hot,