Do you think it might be the air conditioning? The humidity in the tubs stays 50%+, but a few snakes have been having stuck sheds. They get the head off and wait for me to get them out and hand-shed them. The shed is still soft, so I just think they get lazy and don't want to do it, LOL. The majority of the others(I have around 40 now) are still having perfectly complete sheds. Everyone eats great, has normal bowel movements, clean skin.. I don't know.
Seems all of mine do better in the winter! Weirdos.