OK. After my miserably failed hatch with shipped eggs, it's been suggested that I hatch them in egg cartons. I have another batch of eggs to go into the hatcher tomorrow, and would love some help with this. Do I just put them small end down? Will the chicks pip into the top end? Is that how they find the air sac? The last hatch all died. When I opened the eggs, only 3 had pipped into the air sac. I suspect humidity problems, but possibly mal-shaped air pockets too. Thanks.