Hi,
My W126 has just eaten a set of rears in about 7 months and 4k miles.
I do have quite alot of visible negative rear camber, but when I got my car aligned a few months back, the tech didn't say that the rear was out of spec.
The car is an '85 500SEL 5.6, no SLS. Lowered about 2" or so. 265/40r17 with 13mm offset on 8.5 rims on the rear.

From my understanding Mercedes offer eccentric bushings for the rear arms to correct minor geometry problems. How much can these adjust by? I looked up in the workshop manual, but cant find reference to them.

I think my only other alternative is a k-mac kit.

Has anybody ever used one? How easy do they install?

Thanks.