so i crank up the smoker (WSM) yesterday at around 6pm with almost a full 18lb bag of charcoal. it is up to temp and temp controller is holding it at 260 with water in the pan. so i add the two 9ish lb pork butts to it and set the controller to 230 at just after 7 pm. all seems well i check on it here and there till about 12:30 am everything looks great but i needed to add a little water. so i go to sleep and set the alarm for 7 am to check on it and add water and fuel. when i go outside the fire had died down to a few coals and the temp was down to 170 something. i am still amazed by how much fuel the WSM devours! i cleaned out some ash added coal and water and let her come back up. my meat dropped about 5 degrees during the warming up proccess. one butt was at 169 and the other at 161 when i got outside and now waiting for them to start climbing again. ohh well i am just going to have to make sure this somebish is fully loaded and ash cleaned out before bed next time.