I just bought a 1982 GL1100. Gorgeous bike, new Pearl white paint, new tires, anyhow, Owner said speedo cable was broke, okay, but when I rode it home, the odometer was turning. Needle never moved. Will lube get it going? Is it f-ed? I am mechanically inclined, so no problem taking it apart, just want some advice so I don't waste my time. Any help will be greatly appreciated.