This is a 11/04 Mfg. date ... It was running fine for the start of winter. I am in central Mass. Then I would wake up and find it out with box overflowing with pellets unburnt. From watching it it looks like the top auger was stopping too long. Then the coals would go out and then it started feeding again and pump in un burnt pellets all through the shutdown. I have put in a top auger cleaned the vac hole in firebox, (And cleaned the other hole at the combustion blower) tried jumping the top auger vac switch, This morning I changed the control panel. I'm still in the same boat. It was cleaned good at end of last year. Thanks for looking.