All of you smoker vets out there probably know the answer to this question. Personally Im a bit confused (beer is good!) I am smokin my baby backs and with a mav prob attached. Everything is going great. Im doing the 2-2-1 method (It is more like 2-1.5-1-.5 or something now) Anyway Im about 1.5 hours into the foil cook and my prob goes off for 170. I went out pulled the ribs out and put in my thermo fork and sure enough 172. Hmmm I thought I would cook it for another 10-15 minutes unfoiled. Now the probs both say 155. Is it because of the foil??? Should I keep the prob out when foiled. Any insight would be awesome. You could imagine my astonishment when I looked back at my Mav and it said 155!