The speedometer on my 2011 990 Adv reads about 5% fast. When the bike turns on it momentarily shows wheel size (circumference), The OE manual calls it length. The current size is 2205mm. I want to make it 2108mm to calibrate my speedo but I can not find the procedure in the owners manual. Anyone know how to do this? Hopefully the a key stroke sequence at the instrument and does not require plugging in a computer to the make this adjustment.