Fit parts together for W-913. Marked and drilled first hole in A-914 then fit it to W-913 assembly. After figuring out how to temporally fit A-907 L (using plastic straw as spacer) and using it to align A-914 I drilled the second hole. Second hole was more off center than the first hole. Aileron stop also turned a bit as was not as aligned as it could have been. Decided to fabricate another A-914. Got it better second time. Holes very close to center and stop is aligned with A-907.
