Haven't read everyone's posts... So I might be repeating stuff.. Here goes..
First how is the odometer vs travelled distance... The odometer doesn't need the speedometer to be calibrated.... If the odometer is off your speedometer gear is wrong.... If the Odometer is accurate and the speedo is off the speedo needs to be calibrated...
The speedometer should read 60 MPH when the cable is spinning 1000 rpm
