Hi all - I have an intermittent problem with our Castile Quadra-fire pellet stove. I have new horizontal vent with a run to an outside verticle vent pipe, nice and clean, and keep the stove clean (pot, pipes, bin). It runs nice most the time with a fast flame (yellow) and normal soot buildup. But once in a while, it gets into an overheat situation, with the last one happening, in conjunction with lots of smoke coming into the house. I am guessing that it might be the exhaust blower motor, or maybe the controller. Oh yea, the #2 snap switch seems to have come into play, as the feed was stopped during the overheat. The outside of the stove (top) actually got quite hot to touch even with the room blower fan working 100%. Does that sound reasonable or could there be other type issues? normally this stove works quite nice and immediately before the last smoke/overheat situation, was running clean and free of smell/smoke.