How much play? There is an allowable tolerance for this. I amnot 100% sure about the W123 chassis, but I know for a fact that up to 25mm (1 inch) of play left to right , is within tolerance for the W116 chassis.

__________________
1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member