I am hatching a batch of Coturnix eggs and I am having problems. Temp right now is at 99F, humidity at 60%. The temp ran higher than I wanted during the incubation, about 101F, but I couldn't seem to get it to go down any. I have eight healthy chicks so far, one that looked like it hatched "preemie" without absorbing the yolk, and three that have gotten pipped or even halfway hatched and then just died in the shell! My incubator is one of the still air styrofoam ones, and it is about ten years old but the wafer is brand new, I just changed it before starting this batch. I always clean/disinfect it with vinegar between hatches. Can anyone tell me what could be happening here and how I can fix it?