Have you got non standard wheels or a modified suspension?
If everything is standard then it sounds like whoever did the rebuild needs to get adjusting again. I'm pretty sure the W201 needs a spreader bar on the front of the front wheels to set the toe in / out just like the W123 / W124 / W126 models...
...But I must admit that I don't know much about your car. However, there is loads of information in the FSM which has been released for the public by MB =>
Untitled Document
I've had a quick look through but I can't find the sections that cover alignment and suspension adjustment (there's a chapter in the W123 FSM for that you see). If you find them post back a link I'm interested to learn and if it is similar to what I know then perhaps flicking the eccentric bolts through 180 degrees will be giving some good advice... but I'm a bit wary suggesting such things when I'm not 100% sure how your car works... can you see which way the eccentric bolts have been fitted?