Prime R. Wing J-Stringers & both tank attach angles Put L. Tank on Main Spar Drill L. Wing Attach angles to Main Spar Drill Tank skin to splice strip Measure Twist in L. Wing: I/B = 27/32" O/B = 1" Net Twist = 3/32" Drill #8 screw holes to #19 Drill #40 baffle to skin holes