Hi Bruce;

It appears that you have been getting a practical education in aerodynamics since 1965, and that is probably better than most "official" education.

The French have another meaning for their word "decalage," and that application has a lot of dynamics, too. Are you familiar with that principle?

Do you know which production light airplane required nine degrees negative stabilizer?

Did you ever notice that Piper Cubs fly with a slight tail-up attitude? Perhaps Hank Cole had a hand in their design. With the incidence Randall has, his fuselage may appear to fly slightly tail high, also.

You might say that's merely coincidental, and as you pointed out, the relationship of the wing and stab incidence determines pitch stability, so Randall's Astro-hog should fly just fine.