RE: Dirty Birdy 60 Build
Hey Mitch,
Good to see you doing another build!
Joe seemed to omit shear webs on a few of his designs. Instead, he favored very large spars such as 3/8" square or perhaps even larger on some models. Not quite the same but nonetheless. I just redrew Joe's DB40 and for good measure decided to add webs to the wing. You might want to consider doing the same with your wing. I left the last three bays of a 10 rib panel open.
David