Last heating season the pellets I used had a very rough texture, 3 times I failed to catch the pellets hanging up and the stove( USSC 6039) went out. Over the summer I cleaned hopper real well and applied the UHMW tape. Start of this season I filled hopper and let stove run the hopper out, it worked with only a handful left in bottom. I refilled and did it again just to make sure, it once again emptied the entire hopper. Great works. Fast forward to first real cold snap, stove is running on Heat Range 5 constantly. Auger gets jammed can hear motor trying to turn auger. Have had this stove for 13 years and only one jam and that was a nail from a pallet. This stove burns everything I have ever put in it, water damaged pellets, lots of fines, corn, wheat, barley and cherry pits nothing ever slows it down. So I am thinking something in pellets or corn jammed auger. I hit off button and start emptying hopper, I get about half way and auger starts bumping pellets like it does on normal shutdown. I figure jammed object must have cleared, push on button and refilled hopper. Two hours later jammed again. I hit off, start emptying hopper and again half way it starts bumping pellets. I let it complete shut down, empty hopper, pull auger and vacuum out tube. Put auger back in refill and start stove. 5:30 AM next morning wife gets me up auger jammed again, I open door tap auger and it starts turning, 745am jams again. I then think maybe auger motor has gotten weak after 13 years. 2 hours to replace auger motor, restart stove. Runs good until 900 pm jams again, I have a new auger that I bought 10 years ago, so I decide to switch augers out. With new auger fire looks like it is burning on HR1 when stove is on HR5 auger barely rotating then jams. Shut down, empty hopper again and put old auger back in. Standing there thinking what could it be. The only thing different is the UHMW tape so I remove all uHthe tape, refill light and now has been running 6 days non stop no jams fire normal. Guess tape worked to well and tried to slide 60 pounds of pellets and corn into auger all at once. Could never figure out why engineers put low angles in the hopper, maybe to slow the flow of fuel down.