My hens have been in the smoker for 1:15 and the internal temp is at 154F. Everything I have read says to pull them out in about 3 to 4 hours at a internal temp of 165F. They have only been in the smoker for about 1hour and I'm almost at the internal temp to pull them out. There is no way these are done and I also tried another thermometer. Smoker has been at 220F sice the start. What am i doing wrong?