If they are "scrambled',, there will be tiny bubbles around the aircell. If the membrane is detached, the aircell will move all around inside the egg when tilting it.
I candled the eggs before incubating and that revealed nothing. I guess I won't candle eggs before incubation ever again lol.
Yes, do candle before setting the eggs. You will be able to determine if they have invisible cracks, not seen until candling, whether the eggs got scrambled during...