What kind of servo do you have? I got my first fast servo this year and it made a massive amount of difference.
And neew tyres all round worked great for me the othe night, too much steering almost!
Front shocks, 32.5w, blue spring, ride hight level, 3 hole in top tower, middle hole wishbone.
Rear shocks, 25w, pink spring, driveshafts just below horizontal, 3 hole in top tower, middle hole wishbone.
Also I have alloy front and rear pivot blocks, aprox 110g in battery tray and 20g around the servo.
Its not perfected yet, but without a doubt the new tyres gave the car LOADS of steering
Good luck mate