I'm 6 hours into a cook of a pork butt thats 9 lbs. The dome has varied form 250 to 300. The Maverick says 181 for the butt. I hope ya'll are right about the plateau but I haven't seen any signs of it yet.
I pulled the Butt at 200 degrees in just a shade under 12 hours. It turned out great and we had it for dinner. It only had 1 very small bone so that may explain why it got done so quick. Sorry there are no pics my cameras dead. Thanks for the help.