First time incubating Toulouse goose eggs here. I've read Pete's Goose Incubation & Hatching Guide, but still have questions. We're at day 31. 1 of 9 hatched last night. There's no signs of the other 8 having externally pipped. Before putting them in lockdown, the air sack looked good on all 9 eggs. They were put in lockdown at day 28. Should I perform external pipping for the remaining eggs? Will that shrinkwrap the goslings with the sudden dip in humidity? How can I tell if they've internally pipped? Any suggestions appreciated! Thanks!