Do a couple degrees toe out. A few degrees camber also. Make sure all your links are mounted where the book tells you. Also run your shocks where the book recommends.
First thing I did was change springs. I run Pink/Pink or even Black front/Pink Rear sometimes if I need more steering. Run about 25mm ride height.
I run 25 weight oil in the rear and 35 up front. A lot of guys are changing to different pistons but you don't have to.
Adjusting the D Block and adding more Rear toe will help plant the ass end. Also, make sure your running the proper tires for your track. My truck is very stable and the back is planted. But my truck likes to nosedive, and its a bit annoying.