Like was said above, find out what your settings are. If you are ok on toe in the front, and the camber is too far negative (tire tilted in at the top), it will follow road imperfections and behave like you describe. Since there is no way to compensate for excessive negative camber with the OEM parts, the only way to get the adjustment back is with aftermarket, adjustable upper strut mounts.
The rear is slightly better, there is a small range of camber/ toe adjustment built into the lower control arm inner pivot.
Finding out what your settings actually are is the first step: actual numbers, not "Good" or "No Good." The actual numbers will tell you what you have to do to correct the situation...