From my experience I dont think so. I have one incubator working on multiple hatches at different days and I always have to open to turn the eggs myself many times a day. As long as humid is set correct it shouldn't shrink wrap the chicks. But what I do wana know is why my chicks some not all come out crooked toes? Too high temp maybe? Sorry if I stole your thread haha we still on incubator subject though.