Thank you. I had it set according to the instructions, and the thermistate seemed to be keeping it exactly there, apart from the daily cool down hour that was recommended and was part of the automated program. Eggs were auto turned several times a day till about three days before hatching was due.Bullet- It sounds like the temp was too high. You may need to check your thermometer. High temps make them develop faster and hatch faster but can cause birth defects.