Own two Yamaha FX140s... 2006 & 2007... Analog and digital speedometer readouts (2 separate displays on multimeter dash) do not read close to same speed. Have compared speed of my Yamaha's with a friend's jet ski and this shows analog (round) gauge is tracking at accurate speed. Digital gauge reads much higher... when analog gauge is 40mph digital gauge reads ~ 55/60. Could this a set-up issue? Reading maint. manual and I could not see any way to calibrate/adjust either gauge... only one speed sensor/wheel in rear of Yamaha so both gauges must be getting same voltage signal right? Love these jet skis but wish it were possible to just set Analog Speedometer for MPH and digital gauge for RPM... I can't see benefit of having two concurent Speedometer readouts. Both have done this since purchasing units new -- dealer thought speedometer sensor might just need to be broken in... Hours on units now are ~60 and 80 hours. Any suggestions?