I have just started on trying to make a barn find road worthy again. It is a '77 R75/7 with 27,000 miles on it. Second owner's had it for 25 years, but it has been much neglected for the last 12 years while he was living in Germany. One of the things I'll have to fix is the tach. The speedo works, but the needle fell off the tach. It is gone, so the tach must have been opened up at some point. Any insight on how to fix it, find a good used one, or other options? Thanks for any help.