I got another batch of seb goose eggs and there is a HUGE egg in there, not that goose eggs arent big enough. I candled it and I think it has two yolks. Is it pretty much a waste of time to incubate it? The gal didn't charge me for it because she figured it was a double yolker, but said I might want to experiment with it. hmmmm? And also when candling shipped eggs, how do you know if the air sac is burst?