I did an 8# pork butt about a week ago. Had the smoker preheated to about 240f at 6:00am and slid the butt in. Everything seemed to be doing good till about 2:00pm when I notice the IT of the butt really slowed. Once it hit 160 ish it was hardly going up. By 6:00pm it hit 172F and I pull it out cause I had a drove of people wanting to eat. I wanted to get it up to 205F, but at the rate it was climbing it was never going to get there. What's up with that, did I screw something up? BTW, it was good but I think it could have been better. Thanks!