Hello folks! This year, I had the luxury of testing a variety of pellets before I made my first ton purchase. One of the better burning pellets I tested was "Cheat River" pellets. At the time I tested them, I had good heat generation, and near complete pellet burn with just ash powder in the burn pot. However, something has gone wrong. About a month or so ago, I hear a long grinding (as if someone without manual transmission experience was trying to shift a manual transmission) coming from my auger. At that point in time, my Regency GF55 stove started feeding a tablespoon of pellets every 10 seconds at the low pellet feed setting. I now have to clean the fire pot of accumulated ash and incompletely burned pellets about once every 8 hours. In order to get a good burn, but not the flame type Regency recommends, I have the damper wide open. A week ago, when they came out to look at it, they reset the damper to about a 25% opening, and that worked fine for 2-3 bags, then it would not allow the pellets to ignite. The pellet/ash build-up in the firepot looks like a geological formation of different soil and rock formations (the band look). The soot build-up on the door glass is rather odd. The soot obscures the glass within an hour of operation, and the soot has a dry flaky/powdery consistency most of the time, but at times, it has a very greasy/oily consistency. This is the third season I have had my stove, and never encountered this issue before. The shop where I bought my stove has minimal experience with pellet stoves, I think one person volunteered they sold, perhaps, 4 since I purchased mine in the winter of 2010-2011. The pellets do not show any degree of swelling from accumulated moisture, and 40# bags tend to be weighing in at close to 40-41# ... suggesting no moisture absorbtion. I am at the point of scrapping this stove, and replacing it with a regular wood stove, even though my injuries do not lend themselves to the ready foraging of downed trees! Any advice or suggestions as to what might be wrong would be vastly appreciated! BTW, Regency has been less than stellar in providing suggestions for remedying my stove.