I am in the process of making a Bostonian Buttimous to take along to the campsite tonight for dinner (camping in 90+ degree heat always tends to put me in a great mood anyway...). I cleaned out the firebox, gave Humpty a nice supply of fresh lump and even replaced the ceramic grate with the metal trivet, ensuring adequate airflow. At 5:00 I started the egg and had the temp pegged at 225 where it stayed until I went to bed at 11:00. I didn't touch the vent or Ms. Daisy after 6:00 last night. "Maybe this time," I thought naively that I would escape the curse of the butt, knowing that my egg was secure within the 200-250 range as I brushed my teeth and my head hit the pillow. [p]BUTT NO!!!! This AM I awoke at 6:00 to find that Humpty's dome temp had slipped to around 160 and the butt's internal temp was at 132. There is still plenty of lump in the firebox, and there are active coals, I just gang-loaded the vents and removed the daisy. We'll see what happens. [p]Frankly, I'm getting a complex. I have no temp problems when cooking any other pieces of meat, and I'd stop making butts if they weren't so good! Overnight butt cooks and I simply don't agree. I guess Humpty has a mind of his own, musing "well, you're asleep. Why shouldn't I be too?"