Hello all...so, I have two incubators--a hovabator w/turning rack(still air) and a Little Giant(still air as well). Both are just basic styrofoam. For some crazy reason I can hatch eggs succesufully with my hovabator, but not my little Giant--all the eggs are fertile and are kicking and alive and then day 21(or 26 in the case with my call ducks) comes and goes...several days pass and then when i finally crack the egg, there is a fully formed chick or duck but all dead. I finally had a chick pip and hatch almost all the way and finally got out of the egg, and died right there! So, here's my question---what the heck am I doing wrong? Does anyone have success with the Little Giant(still air)??? And my hovabator has little red plugs in the top--nowhere in the directions does it say to remove any of them, so I haven't and had success. But my Little Giant says to remove red plug. Why is it different when they have the same build almost and make??? I do not monitor my humidity with a thermometer in either one of them--I do have thermometers and keep them at 100 99.5-100 degrees and I do keep the center troughs filled with water(both are filled exactly the same). I'm SO confused as to why I've had such issues with the Little Giant. Any suggestions??? Thanks in advance!!