With everything measured and leveled it is time to drill the aft spar.
I previously maked the center of the forks coming out of the fuselage and ensured that if I drilled there I would maintain at least 5/8 edge margin on the wing rear spar.
I drilled it first with 3/32, then 1/8, then #20, then #10, then a 1/4 and then every drill one at a time until it was 5/16 inches. And the #5 bolt fit in.
