My husband and I have an older wood stove. it doesn't have a damper, it has a thermostat on the door. We've been having troubles controlling the stove. you would think that if you leave the thermostat on high until the fire gets going then knock it down to about half way (which says 300*) it would stay somewhere around that area. in fact, some days it takes right off and the temp keeps rising. we closed it down to medium this evening and then watched the thermometer climb to about 650* and would have kept going if we hadn't shut it almost all the way down. And also I know I've asked this before but when it starts to hit the higher temps, the stove pipe crackles like rice krispies. It's been doing it for a long time lately (10-20 min). we cleaned the chimney and pipe a week ago today but it still does it. even the day right after. nobody else has this happen to them? It makes me really nervous but I continue to look outside to make sure I have no roman candles on my roof and nothing yet, despite the MANY times that it has crackled at me. It doesn't make much sense...... advice, please, thanks a ton!