The problem is he is using the wrong specs. The original 114/115 suspension put into early 107s was modified in 1986. The original front end which you would have in a 1985 500SL has specs somewhere between 3 and 4 degrees.

The 1986 on 107.048 has the 9-10 deg spec.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician