My castle serenity is working on its 3rd or 4th year. Early on the auger/motor assembly crapped out and warranty covered repair. Just today the auger stopped moving completely. I emptied out the hopper and poked around to see if anything was jammed. Not that I could tell. I emailed local place to see when they could come out. Is it basically the case that pellet stove are a bit of pain in the ass in general with this sort of thing?