I'm sure page62 has the part I used to fix mine. The motor worked, but the nylon cable snaped. Ordered a repair kit for mine from Eckler's and within 3 hours it was up (and down) running again.
Funny, the previous 2 owners took it to the dealer (didn't have a clue) and even pruchased a new mast antenna to replace it (sure glad they didn't do that!).
Anyone in need of a new mast antenna kit (it has everything), let me know - I'll sell it to you cheap

, (I would rather give it a good home, then to toss it in the trash). It's a direct replacement for C3's.
Shawn