Originally Posted by zephuros

Hi Rob. I took your advice. Made a huge difference to the way the car turns. There's a lot more front bite now off throttle, but on-throttle steering is still poor. I finally moved the ESC out to the side and installed a full length Lipo as well. The extra weight has also helped with stability.
Try going stiffer on the center spring to start.Also see below.

However. The one thing which has really transformed the car is going to a direct steering system ala F104. I threw out the bell crank and replaced the balls and cups with tamiya units. Steering feels more responsive, and that feeling of the car wagging its way through the turns is now gone. Will add a picture later.
Interesting....

Also, when you said increase height of upper arms did you mean under the ball studs where the arms mount on the chassis?
Yes add spacers or taller ball studs. That should help with the on power steering