Page 51 of the user manual related to the flight parameters says "Distance value will show as N/A if the Phantom 2 Vision+ is not in “Ready to Fly” mode. Ready to Fly and Ready to Fly (non GPS) are the two options in Phantom Mode, vs NAZA Mode. I find the flight parameters of distance from home point helpful when the Phantom is beyond visual. Are these not available in NAZA mode? Or Should the User Manual say, "Distance value will show as N/A if the Phantom 2 Vision+ is in “Ready to Fly (non GPS)” mode.