Okay, I have a duckling that has been fully zipped and pushing for 2 1/2 hours. Two other ducklings have since finished zipping (they were just getting started when this one began pushing) and hatched all the way out. Is the duckling stuck? I pulled several ducklings out of the incubator while he was finishing zipping. I did it quickly, spritzed everything with warm water, and replaced a wet towel in there with a clean wet towel. The humidity actually spiked while I was doing that because of all the water I added & sprayed in there. Is there a chance I got part of the zipped section wet and glued it back together? How long do I wait before thinking of helping? I have two pipped not zipped eggs in there along with the ducklings and the one having a hard time. Also three eggs that have not, and may not, pip at all. At what point is the "help" I might offer worth the risk to the other pips? Thank you!