I have a 1993 300E 2.8 whose front tires are wearing out the outer edges really fast. It had a 4 wheel alignment several months ago but no help. The MB indy shop that I frequent checked it out and told me that the alignment is already at the extreme positions and cannot be further adjusted. He recommended that the control arm be bent to correct the alignment problem. He claimed that this is a common issue among W124 since the range of adjustment is pretty small and we'd easily run out of range by now with the suspension sag over time. Does this sound right? I did a search and found no posts on this issue.

Thanks,
Ying