I've been hatching turkey eggs all summer. The majority of hatches start off pretty good, poults breaking the shell even all the way around, however, the membrane stays intact. I've had to get it off the poults, or they die, getting shrink wrapped. When I crack the turkey eggs to eat, I also have trouble getting through the membrane and have to poke something through it, it's very firm and kind of rubberey. The humidity in the incubator is a little high, I was thinking a few hatches ago that I had it too low, well that hasn't helped. Anybody have a similar problem, any ideas on what I can do?? THANKS!!!!!