I'm improving my candling and beginning to understand what I am seeing. I have 45 eggs set and they are on Day 7/8. I saw body, veins, air pocket, and movement on 27 eggs. I saw body, air pocket and movement on 12 (These are all dark brown shells so too dark to see veins). 3 are questionable (one is too dark but has an air pocket, one has air pocket and veins but no noticeable body, and one has body, veins, air pocket and movement, but the air pocket is on the side of the egg). 3 have no noticeable body, veins, or movement. It just looks like a yolk blob in there. I've left all of them in the bator, but I'm watching the problematic ones closely.
I'm going to try not to candle again until Sunday. Ha! I don't know the typical hatch rate once they get through the first week, but 39 good looking eggs is more than I expected at this point.