Got the car back yesterday with new mechatronics. World of difference. No hiccups, shift from 5th to 6th is smooth and the car just seems to run through the gears better. Crazy that a transmission with only 65k on it was that out of whack.
For reference, Baron BMW in KC got BMW to approve the repair for my car.
Ex-2005 545i - Orient Blue/Auburn Dakota/Anthracite Bamboo Trim