Cooked a 5 lb butt for my first cook yesterday. Used "The Method" and started at 1:00PM. I found myself chasing the temperature throughout the afternoon trying to keep it steady within the 225-250 range. Would run too hot and I'd close down vents. Would then begin to run too cold and would open them up. Things finally settled down around 5. Turned and basted at 6 and temp swings started again but settled down around 8. Meat temp got to 280 by 11:45 and I was shooting for 295. Moved thermometer and meat temp dropped to 267. Got fed up at 1:00AM and went to bed. Got up at 4 and meat temp was at 261. Really ticked off now. Pulled of smoker and surprisingly the meat pulled apart easily and fell off the bone. Although I never reached 295 appears meat was thoroughly cooked. My only question: why the cooker temp and meat temp fluctuations? What can I do in the future to create more uniform temps? Thanks everyone!