Auto turner was fine, kept the temp at 100/101 to be safe in case the thermometer wasn't accurate. Had about 7 eggs, 1 grew veins and came almost to full term, but after 21 days passed, we saw no movement or development. Cracked it open after we were certain it was dead, little chick was fully formed, but stiff and never hatched. After reading more perhaps we didn't stabilize the humidity enough. Any other thoughts? We almost want to scrap the bator and let our hens brood in a separate coop.