Fairly new to the world of smoking. I got the weber smokey mountain smoker and have used it about a dozen times or so. Anyone else find that it cooks quicker than others? I know they say 1.5 hours per pound but my meats have cooked a lot faster than that all the time. Did a 9 lbs pork butt the other week and it only took 10 hours. Nothing I've cooked came close to the 1.5 hour mark