You've got to wonder how much that project cost the customer. I'm guessing $100k? BMW doesn't offer manual labor services for cheap.
Additionally, I would assume that the factory warrants its work for some period of time, but what dealership is going to perform needed repairs?
(and why in the world did the customer mess with the tranny?)
2014 535d, M Sport, Space Gray/Mocha Nappa
2007 530i, White/Black, 6MT
2001 530i, Orient Blue/Beige, 5MT
1994 325is, White/Black 5MT
1984 325e, White/Black 5MT
1983 318i, Delphin/Beige 4MT