C29,
In general, when the EB "needs adjustment", it's not a cable problem unless it never worked to begin with. The system is self-adjusting, but it's not unusual for rebuilders to forget that the mechanism may need maintenance after 30 or so years. I have a breakdown of the system somewhere... When I have a spare hour
I will post the details at
http://www.erareplicas.com/427man/jagrear/eb.htm
Noon update:
The page above might be enough. The adjustment can be done with everything in the car, although it ain't easy. I'll get to the rebuilding part of the process ASAP...