I have similar incubators and I am having problems hatching. Most of my eggs mature, but they do not absorb all the yolk. I put them on lock down on day 18. I wait until day 25-26 to try and assist hatch that's when I find the dead embryo. What am I doing wrong. Temp is 98-99. Humidity day 1-17 is 30-40% on lock down I jump to 70%.