Hi Guys I am totally confused. I invited my children and 11 grandchildren over for a big Pulled Pork BBQ. I bought 2 - 8 lb bonein boston butts fresh and figured they would be ready in 16 hours. I held the temperature at 250 -275 during the whole time. 20 hours later the digital themometer on both butts read 177 degrees and it was 7 pm. The kids had to go home because of school. I gave one of butts to my son and when he got home, he tempd it and had an internal temp of 196 and the butt was perfect. When he call me my other butt was still on the grill reading 178. I immediately took it off and the butt was perfect. Is it reasonable to assume that I had TWO new digital thermometers that read exactly the same thing on two different butts and each were broken? SOunds like Human error to me - mine. But I don't know the error. The day was a major disappointment after a lot of work and I still don;t know what happen.Advice pls Thanks Eric