I dont get it. The last 4 or 5 butts I have cooked have run really long. I put a 7 lb butt on last night. In another hour and 45 minutes it will have been on for 14 hours and the internal temp is sitting at 162. This means it is a long way from finishing. Possibly even pushing 20 hours. I trust the stoker and it seems to be keeping the temp stable at 225. I have stirred the coals one time about 20 minutes ago just to make sure that I hadn't burned a column through the lump.
I wasn't planning on having it till dinner but wow.