like I said earlier, more patience, less candling.
the reason we stop turning the eggs is to let the creature inside orientate himself.
by picking up the egg and putting it down you are confusing the baby.
don't you have someone you can go visit for a few days ?
You have to leave those eggs alone.
they were distressed when you got them, so this is less than an ideal hatch.
you have to get used to the idea that not all eggs will hatch. you will have to develop the attitude"
If they make it, they make it,
If they don't, they don't.
and I consider candling unnecessary for a good hatch.
If it is done at all, it should be to locate any clear or bad egg for culling.
when I have a thousand eggs doing, I don't find a need to candle.
If I get a bad egg, it will let me know by the odor. I locate it and toss it. usualy it will be a cracked one.
If you want to candle, do it as you are first setting the eggs. then you can locate a cracked one early and get rid of it.
I have never had an egg explode in the incubator.