I'm in the middle of a hatch and have a question for you more seasoned hatchers. Have you ever had a chick zip 1/2 way around the egg, then die before being able to zip the second 1/2. I just had that happen with a NHR chick. I was literally watching it zip, then it seemed to stop for a rest. I kept watching off and on for the next 20 minutes and then noticed no movement. I took it out, completed the hatch and the chick had already died. Within 30-45 minutes of beginning the zip!! He was a very large chick...could that have been the problem??