Most dealers should be able to give you a print-out of the alignment vs. the factory specs. Even good indenpendant shops can do this alignment w/o too much trouble. As Benzmac said there isn't much adjustment because of the design to replace the "bolt kits" instead of cams. Very hard to over-adjust anything but "toe".

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MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH