Steve said that. However, he also said that it was done many years after
the plans were first offered for sale. I believe it was about the time he
changed it from the W-8 to the W-10. There were a few tube sizes that were
increased in size then, particularly at the top, front of the cabin to carry
the spar loads. Of course, it was because of the heavier Lycoming engines
being used rather than from failures.

"Cy Galley" wrote in message
news:1uJdc.117$xn4.5040@attbi_s51...
Steve did more than just "eyeball" engineering. He had some contacts at
the
University of Wisconsin that he sent his drawings and parts down to have
them analyzed.