Modifying the aileron stiffner - 1.5 hours

One of the items that I had discovered was that the aileron stiffener Van's provides in a service bulletin interferes with the rivets in two places on the rear spar. I had sent Van's an email asking if it was possible to file down the interfering part to allow access for a MK-319 rivet. In my particular instance they agreed with my workaround. So i went to work with the files to make the necessary space.