Tech, when you tried out RF-X, did you have your InterLink Elite plugged in? If so, you then flew with the Interlink Elite? It wasn't until afterwards you tried the Interlink-X ?
I ask because I found that X will fly with either, however if you fly with the old, X will not see the new until you unplug the old, and reboot the system, then plug the new link in and let x find it and ask to center all up. At that time you can fly with the new link, then shut down, reboot and go into RF6 or 7, plug the old link back in and it will work. However, the old RF's will see the old link, X will see the new link and you can leave both links plugged in all the time. One more note, the X link really "PREFERS" a USB3 slot, though it will work on a USB2.