Wife and I are still trying to decide on a pellet stove. We have narrowed it down to the Harmon XXV, Enviro M55 cast and the Quadra-fire Mt. Vernon. The question we have about the Harmon XXV is there seems to be alot of complaints about a squealing noise from the auger. Is this a common problem with this stove? I know that is something that would drive me insane. Any feedback would on this problem or our choice of stoves would be greatly appreciated. Thanks Kevin