My compass seems to be about 45 Degrees off calibration. When I am driving due North, it will show NE, so on and so forth. I tried calibrating it by the manual, driving in circles under 5mph. The screen will say, "drive in a circle" and after about 5 seconds of driving in a circle, the screen goes back to the main menu and it will not finish calibrating. I have tried driving both clockwise and counter clockwise. If I go over 5pmh, it will say, "menu screen only available when stationary." So I know when I am going too fast. I also tried adjusting the zone and it appears to not change anything. Does anyone know how to fix this?