I read the tread on the twitchy power steering. I have the similar problem with my manual steering.
Going down an exit ramp with quick acceleration if you hit a bump the car acts like it has play in the
steering.I was thinking that it was me bouncing in the car moving the wheel.Now I am not sure. This is
a m3 . Could the caster be what is causing this also? Sometimes it is straight as an arrow .I have checked
everything over and over.Everything is tight and nothing is in a bind.