Scheduled at dealer tomorrow for an 8am test ride with the top mechanic so I can drive and have him feel the shudder. Again they will provide me with a loaner. This is trip number 3 for one of the unresolved issues.
Transmission still shifts smooth, but is surging again and exhibiting the throttle imput lag that the previous tranmission did. My wife commented that it make the car a real challenge to drive in stop and go traffic. I will also address this with the mechanic as this is something the car should not do. Transmission was 1 week old yesterday If only it behaved like the 328IX loaners they provide us.
I'm also going to ask for a complete printout of all maintenance records since new to see what else has been done with the car.
I'll update after my #3 dealer experience.