King Pellet Stove 5500m. This is my flame on setting 3 in auto mode. It just doesn't seem to be putting out enough pellets. And the fan motor is going onand off every 5 seconds like it revving up. Sounds like a humming noise. And it's not the fan that blows heat out, that's blowing out heat. It will make a large flame every few minutes but I didn't think the flame was suppose to get low and the pot almost empty before it dumps more pellets.It's been thoroughly cleaned and has all new vent piping according to manufactures recommendations. Does anyone know how to fix this? Much appreciated.