Center bottom spar joined and 1/2" balsa fit and epoxied to spar doubler
Added air tanks.
I will cut opening in top wing from first rib to first rib and front to back spar to provide access to brake controller, retract valve and other stuff
Glued hardwood wedges to fill gaps twixt spars and spar doubler
Robart hinge pockets (#315) EIGHT per flap in wing TE
1/8" Robart hinges (#307) will glue into flap LE