Dan,...

I know that the Tower Kaos's were a bit larger than the original Bridi or Great Planes Kaos's. For example,... the Bridi and Great Planes Kaos 40 had a wing span of around 52 inches. Whereas the later Tower Kaos 40 had a 55 inch wing span. I sure the same increase applied to the 60 size variant.

Is it possible you have the Tower Kaos 60??

Signed,
Steve T.
Monson, Massachusetts