I was so happy to get eggs from one of the members here (don't know if I should use names). I had an incubator problem, and it was keeping one level at 106 and the other at 99 (which I didn't know until I couldn't figure out why that level had no good eggs). (It never occurred to me that different levels of the same box would be so divergent.) A wonderful person on this forum was willing to send me some more eggs out of the kindness of her heart. (I already love this forum and the folks here.) Anyway, I got the eggs today. I've seen a lot of comments about the air sac, and I've seen all types, but I was wondering if there was a rule about them that says "some won't hatch ever." Two of the eggs came with air sacs that will go all the way from top to bottom and all the way around the egg. Are these worth hatching? Two more came with air sacs that seem to move around the top of the egg (where they should be), but when they move, they move in lurches--lurching from one place to the next (still in the right area at the large end of the egg) as they go all the way around the egg. Will these hatch? The rest all look very sound and solid with yolks that seem settled down at the pointed end (so they're probably ready to put in the incubator0. I thought I'd put them all in and see how they went. But I was curious what your experience is with these eggs "problems" from shipping. While I'm on the subject, do you rest the eggs for 24 hours or 12 or 3 or 4? I've seen all kinds of opinions on this, and I don't think anything is settled on it. Thanks!