After my run around trying to get my Lumberjack Hickory Pellets and ended up without Hickory but a few other blends I decided to clean hopper and augur. I have not empty my hopper in very long time. I used my 5 gallon bucket with vacuum head to empty hopper. Really not must dust to speak of in it. Went ahead and ran augur until empty and put vacuum on it as I have been hearing some noise but probably just normal. None of this was necessary as far as I could see. Been trying without foil last few times but going back with it. Easier to clean and made no difference in performance. Mine runs 25 degree hot and i just adjust set point for it. Well its ready for another smoke. Man I wish they would of had a good sale on Brisket!