It's probably not you. X-Plane nav data may very well be missing those waypoints. The best thing to do when you find missing waypoints, incorrect runway designations, incorrect airport ICAO codes or the like, is e-mail your findings to Robin Peel so he can include the corrections in the next X-Plane Airport and Navigation data update. http://data.x-plane.com/index.html For guidelines on reporting errors, click this link: http://data.x-plane.com/contact.html His e-mail address is robin@x-plane.com