Hello Well my friends 4 year old 25-PDVC was not working right at all! Finally after shutting down in 4 hours and then in 2 hours,then it would only make it thru startup and then shut right down. The bottom auger ran fine but just got less and less pellets until it got none and the stove shut off! When that happened the top auger was completely bound up and jammed solid! So I told my friend to scoup out all the pellets from the hopper. I went over and pulled the top auger and ground down the knit line and assured there was no more burrs. Then I brushed out the chute, coated the chute with dry moly spray along with the auger, then put it all back. I could move the auger freely so I attached the motor and started the stove. Same problem, after the pellets lit up the bottom auger fed less and less pellets until the fire went out. I put on a new auger motor and it went a tad longer but then less pellets and the fire went out. The top auger was jammed up solid! We were baffled. So I removed the top auger and also the bottom auger and stuck the wet/dry vac in both chutes to remove all pellets from the chutes. I took the bottom auger, wire brushed off the carbon at the end and filed down the knit line and burs, then coated the chute and the auger both with dry moly spray. Before I put it back, I took out a very long and thin test tube bottle brush and snaked it from the bottom auger chute up to the top auger chute. Then I found the problem! There was a bridged hardwood pellet between the chutes! This pellet fell down and I removed it. Then reassembled it all and put the original auger motor back on the top auger. Fired it up and it ran for the next hour even at heat setting 2 and fan setting 2! So this bridged wood pellet could have been one that was left in there all summer and caused the jam! Has anyone else had this problem? ? ?