In addition to what Andy listed above, I have two other thoughts:
- what brand of pellets are you using? we had the problem you are describing when we were burning branch creek
- do you have any of the exhaust holes plugged up? we were doing that to the wholes opposite the pot to help even temps across the smoke chamber but think that was cutting down on draft to blow the ash out of the pot
Country Smokers 450
Weber Smokey Mountain 18"
Proud KCBS Member & Certified Judge