Dennis Ficken is great. He repaired all the cylinders in our SL500 and did a wonderful job, in a short amount of time. They look brand-new and work perfectly. The complete set of Dennis rebuilds was less than $600 including shipping both ways, when the dealer wanted $4k just for the parts and that didn't even include labor.
Not to mention that the seals Dennis uses are not susceptible to degrading in contact with the MB Hydraulic Fluid, while the OEM cylinders' seals are a known design defect and will just cause the same problem again in 5-7 years if you replace them with new ones. I just couldn't recommend Dennis more highly.
His contact info is:
Dennis Ficken
16285 S. Chester
Olathe, Ks 66062
(913) 390-0506
mercedescylinders@sbcglobal.net