I own an 2006 Audi A4 with a CVT Transmission and just had the TCM replaced and CVT rebuild. The car now shakes a bit in first gear some times on second and on reverse, it also shakes when I'm slowing down the car. The mechanic who did the rebuild told me that it's normal because the computer is adjusting to itself and my way of driving. He mentioned that everything should adjust after driving the car 300 miles. Is this normal and true?