Bike, it looks like your hatch mod would provide access to the front spring holes. I'm thinking about filling the front and rear spring holes with balsa, backing them up with 1/8" lite ply and drilling through this so I could use 1/4" x 20 nylon wing bolts at the spring locations. If I did this I wouldn't need the springs at all nor the 'stock' wing bolt. Whaddaya think?

Regarding flying, have you been flying snaps, blenders, walls and other high-G maneuvers? GSP tells me that out of a thousand or so Katanas out there, I'm the only one reporting deficiencies in the wing spar design. Maybe I just got a dud.

TO ALL GSP / CHIEF KATANA OWNERS: Do me a huge favor...look down the inside of the wing halves and tell me which way the grain of your shear webbing is running. I'm very curious...

-Tom