Hi Larry,
I wholly agree about the pro's of Klegicell and I would love to have a set of
"skins" made with it. However, Dan Diehl's skins were made with Lastifoam.
It's a lot better than the urethane but not nearly as tough as klegicell.
I know this because I hangared with Dan for 18 years and have seen and helped
him make skins. I have also used his "skin foam" in other parts or my own KR.
As a disclaimer, I will say that I don't know what type of foam was used before
the change to Lastifoam prior to 1996. That is the point that I started
becoming much more aware of composites and the materials used.