OK. drove it again today and here is what I observed: It seems to be only in 3rd and 4th gear and holding the throttle steady or VERY lightly accelerating below about 2500-2600 rpm. If it gets above that, it's fine. It doesn't do it from a standing start if I accelerate a little more aggressively, not even enough to get the boost gauge lighting up.
All that said, it's hard to know if it is doing it in 1st or 2nd as you get past 2500 pretty quickly, even lightly accelerating. I did notice it shifted a little oddly going from 2nd to 3rd a couple times, not every time.
