Just a question but when I load my stove and set it on high until wood has become charred. Then I knock it down to about half for about 10 minutes the low on overnight burn. At first its fine but after about 30 minutes the secodary combustion is uncontrollable. I understand that this is a great design but if anyone knew of a way to control this via a damper or something over the secondary combustion hole etc.. Any help would be much appreciated.