I rarely fly bombers though took this up yesterday. Went into F6, then calibration. Held 'Y' for 5 or 6 seconds then 'U' to exit calibration. The crosshairs immediately moved to above the horizon, as in pointing at the sky. This was repeated half a dozen times, same results.
I have a print up of AH instructions, followed them step-by-step. Either it has changed or a bug?
Boo