New Propeller Shaft, i.e. Driveshaft arrive from on Bimmerworld and installed and problem was eliminated. Rather easy install taking 3 three no rush hours working with my QuickJacks and creeper on the garage floor. Did not encounter any of the usual BMW headaches.
Here is the source of the noise and rotating knocking. 221,000 miles and it’s in good shape other than the center carrier bearing. I could probably rebuild it but these shafts seam pretty easy to get. If anyone is around the Charlotte, NC area and wants it, it’s free if you pick up.
Thanks for the feedback.
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