Today I took the car in and had them do a bunch of tasks (so I can conclude the 30k mile service over 5k mile time period!).
I told the man to check the Steering because I felt it was getting loose. Also check the differential, transmission, and motor mounts. I also had him check ware components in the suspension (Front & Rear).
On the repair order sheet, in accordance with each CHECK (per me), is written, "ALL LOOKS WELL." So he didn't find anything out of the ordinary. They do not specialize in Mercedes, so perhaps I can help them help me with this problem.
Firstly, my alignmest is very off.
Secondly, I will have him spefically inspect the "thrust links" and "toe links"
Thanks for the help guys...