Here is a pic of one of my 21 eggs . They are at day 17 and am a little concerned about the air cells. They just don't look large enough to me. My humidity has been between 20-30% the entire hatch an I figure that it's to late to try and correct air cells now since they go on lockdown tomorrow...
So I built my own incubator or cooler-bator and filled it with eggs. I candles them at day 5 and all showed signs of of embryo development, at day 10 still progressing and today (day 14) I candled again and every egg looks great. Air cells look good and there is embryo movement in all of them...