Deburred aft bottom skin and drilled drain holes. Began deburring aft side skins, lower, and mid longerons.
Dimpled aft top ribs, deburred cockpit rails, and front seat support.
Deburred aft top skins and ribs.
Match drilled gearbox webs to longerons. I used a ratchet strap and 1/8 angle to match edges. I really had to crank it down as Vans said this is normal.
Match drilled forward seatback support to cockpit rails. Took a lot of time due to close tolerance between parts. The aft #19 holes for #8 screws will not have proper edge distance with the spacers. This is okay since it is only a spacer. All clamped up for drilling.
Fabricated tails spring mount shims. Installed mount into position for match drilling.
Match drilled cockpit rails to longerons and seat back supports to bulkheads.