Finally in April the slowest of my Cycas panzhihuaensis seedlings produced it's second full leaf. Hopefully this is a sign that my diagnosis of excessive humidity was correct and normal growth will continue from now on. It's possibly a little unfair to say that this is the slowest of the three, because it has started to produce three leaves that didn't fully form. If those three leaves had formed properly, this would be the fifth leaf and I would be saying this was the fastest of the three. Assuming all the issues are resolved I should now be able to get a better idea of it's normal growth rate as future growth develops. There have been no other changes to feeding, watering, etc., although having moved some other plants that were near this one, it is probably receiving a little more light than previously.