Ouch, sounds bad. I don't think I've had any worse than this... maybe a bit larger.
I considered turning issues but they're in an autoturner that I had great hatches with before I quit hatching local eggs, so I really don't think it's that.
Was it shipped?
How far up? I have had many eggs with CAM not fully developed at bottom, only shipped... really kills my hatch rates, generally around lockdown. They just run out of room.