Dealer just replaced my rack. It took a week to get parts. After a 35 mile drive this morning, I'm not convinced this problem is gone. It's definately improved, yet still doesn't track like a 'normal' vehicle. I'll give it some more time.
The dealer also did the DCT TSB (which seems to have eliminated the chugging from start), wiper connector checks, and they found a "twisted" CV boot leading to it's replacement along with an axle.
The rack manufacturer (TRW?) is probably having much difficulty keeping up with these replacements.