Rear-end wanders at speed Help please

Originally Posted by jchammond

I'm currently experiencing my Z dancing around at high speeds/worse on 2 lane roads,,,was never an issue till the alignment set my front and rear toe at 0.
i mentioned this earlier to (Rusty) & he told me that i needed some positive toe...i just haven't had time to take it in....drives perfect under 80-but don't push it hard or it will be squirrelly.
Before alignment shop got it,i adjusted my rear camber myself to straighten out the tires more-to make a few passes at the dragstrip.
drove to track and back (120miles) with no issues,,,blasting up to 130,140 at times.
front toe was 0.22L & 0.08R rear was 0.21L & 0.37R a good bit of + toe in rear....their final setting was front 0.01L & 0.04R rear -0.02L & 0.02R
i'm pretty sure the toe is the problem on mine...any inputs are welcome.
BTW,,,,13.1@105mph 1.955 60' base/touring/auto/2011/stock