OK, I have an update on this and I believe it is good news.
The factory recommended to the rep onsite to loosen/disassemble ALL the drive train components, then re-torque to specs. The idea was that something could be in tension or compression and causing the issue.
I guess there are a few bolts that once loosened, they are required to be replaced. I know this a common practice for any threaded fastener under critical loads.
2 of these bolts are close in length to one and another.(I think 12MM was thrown out there) The tech performing the work stated these 2 bolts were reversed, in there location, at the time of installation.
But, either if something was in tension, or the bolt length issue was causing the grief, I have been told the problem has been fixed!
My SA himself drove the car and verified the situation is repaired. He is too a "car guy" and was very interested in the whole process.
We will be picking up the vehicle this afternoon. I will try to post more specifics and the "as driven" results.
One comment for sure, I had the faith in Laurel BMW from the beginning and sure enough, it seems like that came through!