With out battery and most electronics my car stands level with the sponge.
No preload on the spring.
Only thing that was in the car was the servo.
Perhaps it is that i use "old" sponges.
Been running it in wide config on foam and i get a easy understeered car if i want to.
I can choose to run softer front tires or harder rear to get more steer
And or run a stiffer centre spring.
As i drive mostly on the bigger tarmac tracks i like it be as neutral as i can get it
With the setup i have and no tire sauce i get it nice and easy to drive.