Do MBZ alignments also use a spreader bar to load or push the front wheels out?
I have had two unsatisfactory alignments recently, one on the '91 300E and the other on the '95 E320 wagon.
Second question: How level does the steering wheel have to be. Both cars pull slightly and both have steeing wheels cocked to the side, slightly.
The 300E was done on what seemed like a very old alignment rack at a Mercedes dealer, the wagon at a alignment shop the specailizes in alignments. Here they had the lastest, I believe Hunter system, that had no physical connections to the wheel sensors. Just flashing lights.