I thought it would be good to post a follow-up since so often folks don't.

Thanks very much for the suggestion on the C&M rebuilt box Zulfigar. I was able to get one for my car at a very reasonable price through Pelican Parts, and it solved the problems I was having. My mechanic said the rebuilt box was fine which was not his experience with a 500SL that he tried to source a rebuild for a few months back. I don't know who that particular supplier was.

With the new box, alignment, new front struts, and a new set of tires it drives fantastic.

I still have a few jobs on the front end that will need to be taken care of soon. Prior to taking the car into the shop I thought it would be good to repack the front wheel bearings. I found that my front rotors are badly worn, and the bearings are going to need replacement as they both show coloration in the metal rollers.

Fortunately the shop just said to bring it by after that work is done and they'll adjust the alignment for me if needed. No charge.

Thanks for everyone's input. The car is a joy to drive now.