Hi Everyone...hope you're staying warm. I have a 3 yr old Timberwolf TPS35. I've burned about 10 tons with zero issues over the last few years. Tonight, the auger started making a weird noise...kind of like a grinding/grunting noise. This noise only happens on half of the auger rotation. The other half rotation is much more quiet. Shut the stove down and completely emptied the hopper. That's when I found this (put the penny there to show scale). These chunks weren't in the auger...just mixed in with the pellets (Energex). But, I have to wonder if it didn't chew some other chunks. Good news is the auger wasn't jammed and seems to operate correctly...except for the noise. Any ideas on what I should look for as a source for this noise? Thanks in advance.