Sorry but its still confusing!
Did the eggs to start with come from a "SETTING HEN"(a hen that is staying on the nest day and night) or from a nest where the hens had Just layed the eggs???
The others you took later---was That Hen SETTING or just in the nest for a few to lay the egg???
Question--I you thought the eggs had been Sitting for 2 days what does this mean?
Why would you have a problem understanding the humidity---31% or 71%?
How much did your home made incubator fluctuate?
If it got to 103 or more for a while the embryo's could be fried?