Yes everything I have read too says let sit up right at room temp. for 24hrs and incubate upright not turning for 1st 3 days to allow the air cells a chance to reattach. It was just too much to deal with and I ended up spending a lot of money and did not get any of the variety of chicks I ordered (only the extras sent from a different breeding pen are the ones that hatched). I was sent 18, 12 developed to lock down and 6 hatched but one has a sever leg deformity and one died after hatching and it had cross beak. I never have these issues when I hatch my own eggs.I've never had any shipped eggs but I've read tons of posts about how they are notorious for detached air cells no matter how well they are shipped. I've been considering getting some duck eggs as I really am wanting to add some more Welsh Harlequins. I will be using an incubator to hatch them though. Everything I've read says to store them upright for the first 48 hours after receiving them to allow the air cell to settle. You have a much better chance of the air cells reattaching if they are hatched upright.