If there is a common theme.................[COLOR=FF0000]don't sweat it[/COLOR].................chicks are WAY more resilient than we give them credit for.
Good luck with your hatch...............and quail do start popping like popcorn. They don't rock a lot and you probably won't hear them like you do at times with chicks. They just start popping out.
And edited to add...................I just use a small LED flashlight from Walmart with the highest lumens I can find. My current one is 200 lumens. I taped some foam pipe insulation around the end so it cradles the egg and contains the light. It's so bright I could probably cande your eggs for you from my house if you held them up,

I like using a flashlight because you don't even have to pick up the egg, just touch the top while in the incubator. I only open the lid high enough to slip in my arm. For really dark marans eggs, I pull them out and use two flashlights, top and bottom. I can see through ANYTHING.