My odometer is currently registereing 1.9 miles for every mile driven. I used a handheld GPS to test. Two different speedometer shops say they cannot help with the problem. I have an older Beck (#148), and the front end is mid '60's VW, with the drive cable running off of the driver's side front wheel. The speedo is roughly 10% off, but I can live with that.
Anyone else have a similar problem?