After three times, the dealer found it. They were as frustrated as I was, but they were determined, even calling in a technician from Infiniti Motors. Hope to keep this car for many years and miles. All in all, this is a good car, and a good used car value, as it depreciates faster than the Lexus. It is fun to drive, but couldbe better in the snow.
Blizzak tires are very helpful, but expensive.
Normally I would have fallen out of love with a car by now. I love my car. This is the second Q45A I have owned, having lost my first one when some fool ran into me about 30 MPH on I5. The car died, I didn't. I looked for three months to find a replacement, since I insisted on Full Active Suspension.