Are they in shed? What you can do it make the holes bigger till the humidity sits where you want it to and as for the condensation maybe your spraying a lil too much? As for me and what I do, I don't worry at all about the humidity any other time then when they are in shed cycle. Thats when I mist and put the water bowls over the heat tape. When there is condensation on the tub walls thats when I know they have plenty of humidity and they will shed just fine. Haven't had a stuck shed in over a yr.