I just candled four day 18 eggs and I'm slightly worried. They still have veins (kinda dark shelled so I don't see movement) and good air cells. I was expecting a solid dark egg except for the air cell, there is still some space at the pointy end (in the two I can see in).....normal? I know they still have a couple days to go so I'm really hoping. Also, one egg (again, veined and good air cell!) has a bit of crusty stuff on the side - looks like dried ooze, just a little and does not smell at all. THOUGHTS????