I purchased a Masterbuilt XL last week, and have done two seasonings/test smokings this week. On a high setting, the flame was overwhelming and very yellow, but at the lowest setting, I was able to get a small flame with just a touch of yellow at the tip. It looks like the lowest temp I am able to maintain is about 275. Rubbed down the butt last night and am going to throw it on in a few hours. It is a 5.2 pound bone in butt. Considering my cooking temp will be 275 or so, what kind of time should I allow it to cook. Was planning on 1-1.5 hrs a pound at 225, but obviously this should cook quicker. I plan on smoking until it is around 200 for pulling. I am not horribly concerned if I finish early, but how long is too long to rest? This forum is a great tool, and I thank everyone for all the great info. Wish me luck.