Well I wasn;t really complaining about the material, it just feels a little different..though most new kites feel different from older ones. That said I don't know too much about the materials, and I have no doubt that the quality is up to speed.
The kite does feel weird when the material is soking wet, but there might be other facors involved such as low wind after a squall, not enough air in tha bladder etc. I have also noticed that some of my other kties behave strangish when wet...

a.