I inadvertently left the lid off the incubator for about 3 hours about half way through incubation. The room temperature was probably around 60-65 degrees F so they got fairly cool. Can this cause shrink wrap? Also the humidity for my currently pipping eggs seems to have dropped. (Don't have a way to measure precisely- but the lid containing the sponge no longer has standing water and the sponge appears only slightly damp.) Is it better to open lid to raise humidity or leave in lock down.