1. Choose the desire locations to drill holes for mounting the wing onto the chassis. Mark the locations down for reference.
2. Drill the holes by using a reamer on the marked location from the last step. Drill 2 or 3 holes if concerning to have more adjustable positions for the wing. The images below shows 2 holes has been drilled for 2 different positions.
3. 2 adjustable positions can be install when finished.