I have a PDVC 25 that is a 2005 year model. The stove has given me amazing service through the years. The only things I have replaced in all those years is 1 upper auger motors, 1 exhaust blower, and 1 room convection motor. The gate in the hopper is set at 3/4 of an inch.But recently it has developed a problem even with the lower feed set at 1 and the upper set at 1 it continues to feed massive amounts of pellets into the burn pot. I use to be able to hear the auger motor cycling on and off but not now. Don't know if there is a reset I can do or if my mother board might have given up the ship.