Well, I started to work on my GL 1979, took it all apart. I started to work on the motor, first I sand blasted with glass powder and the motor came out like new. I took the heads off to resurface the valves and change the valve seals. The thing that bugs me a bit is, this bike, from what the speedometer says, (10,400 KLM) looks like it has more mileage than what it says, but it could be that the old owner drove like an old lady,( lots of carbon ). Look at the pictures, see what you think.