[HMeeder]

Oh, yeah... that shimmy/vibration that won't quite go away. I have replaced/repaired nearly every component in the front end, but hadn't really considered the sway bar. Hmmmm

I had read somewhere that a touch of toe-out contributes to good turn-in (sounds a bit like the 'dive-in' that you mentioned.) If you notice that the car wanders a bit on the straights and needs a bit of extra attention to keep it tracking down the middle of the freeway lane, it may be alignment.