I'm on day 12 and I have a few eggs that somehow managed to get there air sac attached in some odd places in the egg. They were set properly after shipment to allow it to stabilize before incubation. Should these eggs be handled differently, after day 18, than a normally presenting egg (with the air sac at the large end of the egg)? Should I hatch these in egg cartons and place the egg so that the sac is at the top? One has an air sac almost completely on its side. I've only lost 1 out of 18 so far and I just want to maximize their chances.