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.