When working with pre-punched parts, do not be shy about writing on them with a Sharpie©. Getting the correct orientation is half the battle, and keeping the victory means documenting it. Sharpie marks can be easily removed with MEK or Acetone. Keep a gallon of each around. Keep it away from kids tho!
I discovered that if a pre-punched part from Van’s does not appear to fit correctly, I’m probably doing something wrong. Almost NEVER is it a Van’s problem.