@air&road
Sounds like a real good plan; less work than removing the whole shaft again for lube on centering bearings & rolling back & forth.
One note I would make is that when replacing the differential mount, the new mount makes the diff sit about 1cm higher than the original mount did. Not enough to make the sort of change you describe though.

@Zulfiqar
No vibrations on turns or anything like metal to metal contact. Turns and the rest of the driving experience all seem normal and just like my 240D.

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Garrison R.
'83 300D