That's a great idea (cat litter scoop). In fact, when I re-loaded the hopper I used a large spoon with small holes in it to try to get rid of as much dust as possible, now that I understand exactly what my issue is. I will no longer be pouring the pellets into the hopper from the bag, I'm going to buy a cat litter scoop myself, it's the perfect tool because it's large enough that you don't have to load 100 scoops to fill the hopper. Interestingly, I discovered that the metal slide on the right side of the hopper (as you face the grill) was not properly installed by the guys that assembled the grill for me at Ace Hardware. They omitted 1 screw at the top, so the slide was shifted slightly to the middle and not butting up against the hopper's inner wall, which caused pellets to get stuck between the slide and the side of the hopper. I fixed that issue now as well...
My confidence is now restored. I'm going to be enjoying smoking meats for a long time now. Actually, if anybody has a good pizza recipe, please share! I've been putting that off forever, time to smoke a PIZZA! LOL