About 2 weeks ago on the healthiest leaf, I made a small slice at the top of the stem where the fingers meet. The wound just dried and kind of healed.
Also, it appears that all of the leaves are dying. One has completely dried up and the others are following suit. They look to be dying from old age. They are probably nearly 6 months old. I have kept them watered and in filtered sunlight (I think full sunlight wad too hot for them). I also think that two of them had some birds peck at them - which caused damage.
I guess this concludes this experiment and proves that while you can get fan leaves to root, they won't grow anything else.
I will take one of them from their pot and remove some of the soil to show roots (if they haven't decayed to nothingness).
This was fun while it lasted and I thank those of you who commented and showed interest.