Hi! I found this site while I was searching for some answers to my problems with my pellet stove, and I was hoping to possibly find someone who might be able to help me. It is a harman pellet pro II from 1993, which we just bought a few months ago. When we first used it, it worked really really well. But now the stove thermostat seems to be stuck in 2, even though we have it set at 7 (the highest). We have to open the feed rate way up in order to get any heat. The stove feeds pellets but only a little bit, and the pellets don't seem to push forward. Lots and lots of ashes accumulate at the front of the burn pot, but don't really push forward, at least not like it did a few weeks ago. The fire is burning deep in the throat of the ash pot. All of the motors seems to work and there aren't any new sounds. We have tried different pellets, and also cleaning it out several times. We have taken things apart and there doesn't seem to be any jams and the pusher arm is freely able to move and the auger turns. The probe seems to be working because when the stove runs out of pellets and cools down all of the motors will eventually shut off, and the stove shuts down. We have tried setting it up to a thermostat but that doesn't seem to make any difference in the stoves performance. When we change the feed rate the knob doesn't have the same resistance that it used to when it was working properly. It used to meet a bit of resistance then slack up again as it was turned. Now it just gradually tightens up. It's starting to get cold and any suggestions would be very much appreciated! Thanks so much for reading!