In case anyone is interested in seeing how our drivelines may be repaired or rebuilt, have a look here:
https://youtu.be/EJDqL4Qu-7oThe main piece of equipment used by the driveshaft rebuilders is based on a "Shaftmaster"; however most of the firms doing this have added their own things to this equipment. Years ago my driveline was rebuilt by Driveline Service of Portland
http://www.driveshafts.com who at that time used to make a specialty out of MB and BMW driveline rebuilding. They have since changed their focus to other more profitable work such as trucks. One who still does our cars regularly is Driveline Service of Atlanta
https://www.drivelineserviceofatlanta.com