Just bought an Enviro M55 in Oct. It ran great for the first month and change. I cleaned it weekly with the ash vac. I was burning Home Depot "Freedom Fuel" brand pellets. I run the stove and hear the fans and the auger motor humming, seems like the normal "turning noise", but when I open the hopper the auger is always in the same position and has never turned while it still makes that noise. Per the dealer's advice, I used a coat hanger to loosen any stuck pellets, dust, etc. and got what I believe to be most everything out, but no luck. The auger motor still makes the usual noise. The dealer suggested I "tap" the motor as well. I'm not so keen on that. Any ideas before a damn service call??