I'm smoking a pork shoulder on my MES. The smoker is set at 235. I have a thermometer probe in the pork and when it read 160 I took it out and wrapped it in foil. When I put it back in the smoker and put the thermometer probe back in it read 129. What did I do wrong? I thought I had it in a good spot both times and I don't think it was touching the bone.