One thing you could do is go to a pick and pull for a pair of usable axles. It isn't that hard to put new boots on with the proper funnel. Then the indie wouldn't be charging for all that time to re-boot. Just so he knows how to do a Mercedes.
I wish I could give you the list of posts to check, but my other laptop blew-up.
One other thing, I don't think anyone has SD replacement axles.

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1984 MB 300SD Turbo