We have not tried using the thermostat with it yet because every time we change the level which adjusts the rate of the auger, we have to adjust the amount of air going into the flame to get an efficient burn. There's no way we could use the on off setting because it takes a while to restart. After cleaning, we put in a handful of pellets and put it on high but it still takes a while to get burning with a flame after smoldering for some time.. Should the damper be all the way open when starting? Depending on the pellets, some we can use with the damper midway open but others we have to close it almost all the way down. What would be the best for starting it up efficiently? Has anyone gotten the automatic thermostat to work well with it without just smoldering when it turns down?