I Humbly stand corrected.
Chalk it up to age and that it has been to many years since I have spent any time working on it. Sometimes it is nice to be just flat wrong. In this case, I have a IV-1050 instead of a -III. Not a bad way to be wrong.

I also concede on the "under cambered" wing.
I have not worked with other wings and there is a "slight" (1/2" ) of under camber in the wings I have. ( Along with the plastic nose extension ). But it clearly is not deeply under cambered like many of the Avids that I have seen.

Thanks for the corrections,
Sincerely,
Kevin Hanna

P.S. Thanks Av8r-Sed for the corrections.