Take this one to the repair shop...Let them have the liability of the diagnosis. Some times the cable will turn under no load even when broken. The plastic gears could be the culprit (inside the tranny)

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM