So on my F500 I have a Naza Lite and GPS antenna pointing in the right direction but can not get the compass to calibrate. I am using a Futaba radio and have a switch programed for GPS, Alti, manual and have checked it several times with the Naza software so the switch is programed and end points are correct. At that I can't get the Futaba to get the Naza into compass calibration. If I try and get up and hoover the craft drifts mostly backwards. Also when I first fire it up I never really see any blinking red lights. The green will flash and appear to find home position but as soon as it get legs off of the ground I get a fast blinking red light. So is the antenna bad, Naza or both?