ive got about 17-25 eggs in my little giant still air incubator. 6 babies have hatched so far with a few others pip. However, since hatching the humidity levels have started to rise too high in the 70s-80s. I slightly set the lid off. I tried removing the wet rag that added humidity, then it dropped back down but rose again when I entirely close the lid. Does anyone know how I can stabilize the humidity? I had it between 65-70 % and it was working great until more chicks started hatching. I don't want it to be too high for babies still in the shell.