I thought you were saying the compass was rotating the wrong way - I could have read your text wrong.
At some point in time you may have had the Russian HUD selected, which pitches and rolls “opposite” to normal - and maybe you assumed that was normal.
The word “rotation” tricked me - I assumed you meant heading.
By the way, compass calibration always works better if you calibrate away from buildings and power lines AFTER you have a GPS 3D Fix - even if you temporarily fitted a GPS.
