Its not the air cells that are bothering me its the space at the bottom of the egg at the point. They all seem to be different, 3 are shadowed and the rest let various amounts of light througj.Ok will do that. And push humidity up to 75%?
Ideally, they should fill up the pointy end too. Some chicks/ducklings don't, and they hatch a little extra wet and gooey. The second set of pictures definitely looks better to me than the first. I'd leave those where they are, and increase humidity to about 65-70%, 2 or 3 days before the due date. If the clear area in the pointy end is still there when you lock down, just watch for extra gooey-ness when they hatch.
And did you mean those eggs were the first ones the girls ever laid? Sometimes young layers take a few days to weeks to get their eggs consistent. Yolks are sometimes smaller, or larger, etc, so early eggs are a gamble anyway.