If in Detroit area and you need a good MBshop, call John & Holger Service Center in Eastpointe. They are a Bosch service center. Holger is German with a heavy duty accent and he really knows his stuff. Plus he won't charge you an arm and a leg.
Email me and maybe we can get together while you are in town. You can see my '85 300D and '84 500SEL.
84 500SEL EURO 87K
85 300D 267K (and still goin' strong)