I have used charlie cantlin in conshohocken PA before, a bit expensive but he is a MB specialist and has done good work for me. There is also an MB specialty place in Ardmore, PA. Depends how far you're willing to drive.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth