I put a 9lb pork butt in the smoker at 4:30 pm today and set it to 225 and have the wife adding my chips and spraying it every 2 hrs until she goes to bed. I am figuring 1.5 hrs a lb so I am hoping it will be in good shape until I get home at 6am to check on it. I am a little worried about over cooking it. Any thoughts or advice would be much appreciated. Thank you