I have an 03 GoldWing and the speedometer is off by 10%. I recently went on a long trip from Huntley IL to Fort Walton Beach FL so I went past a bunch of mile markers and every time I would drive 1 mile and 1 tenth each time. Also went past one of those automatic radar signs at 25 mph indicated and it said I was doing 19 mph. Is there a fix for this so I'm more accurate? This means I have less miles on the bike than indicated... Bummer