I've never had an egg lose too much moisture unless it was cracked, and then the problems weren't so much moisture loss...
if you keep your humidity up the last 3 days, they should be fine.
all 4 hatched Woot!!!!!! now i don't know what i was thinking but it never ocurred to me i wouldn't be
able to tell the olive eggers from the BCM chicks LOL!!! of course they all came out black from a BCM
roo even tho two of the moms are white.. i am going to have to inspect the leg feathers and combs LOL!!!
it can be very hard to tell chicks apart. I use the baskets to help and have resorted to toe punching since other tags can fall off.