On setting 1, lowest, the auger would get to a certain position and make a rattle, shaky noise. After it circled out of that position, it would quiet down. I bumped it up to setting 4, and the noise went away. In setting 1 again, I can still kind of hear it, but it is much lower. A bushing maybe? Also took some pictures of the burn at setting 4. Notice the pellets being dumped out of the burn pot liner by the agitator rod. This does not happen as much in settings 1-3. I figure those pellets still have some heat in them. but mainly, i just like to post pictures of fire.