here are some changes to make:
shock in middle hole on tower and INNER hole on a-arms front and rear
with stock pistons 40w ft/ 35 rear oil
B-blocks and the upper front arms in the top hole/ not center
diffs with 5/7/2
1 degree toe out front and 3 degrees in on rear.
blue springs and not black
try that and you should see an awsome difference.
brakes set at 30% front and 70% rear
I think your set up is just way off.
I have 2 cars and both are set up this way and I rarely change it between tracks because it works everywhere. I do change a thing or two here and there. I only mess with oils in the shocks and sway bars. The diffs stay the same except I have tried 10,000 oil in the center and like that also.
your problems are probably from the diff oil weights you have used.
this is by far the easiest car to drive around the track that I have owned and mostly in the corners