I replaced the clutch on my 1987 Spider Veloce and after re-assembling and test driving, noticed that the speedometer, when at a stop, stays on about 13mph. Never goes to 0. Onec over 13, it seems to be accurate however, but it does seem to fluctuate up and down about 5mph when holding speed. After about a week, my wife noticed that the odometer was not turning when she reset the trip odometer to 0 and it never moved. She then noticed the odometer itself was not moving. Any recommendations or pointers would be a great help! Don't want to end up with a low mileage 1987 that has a defective odometer that brings into doubt the actual low mileage!