RC18R - Who stole my rear grip?

[supersonic]

Hello fellow racers,

I am struggling with oversteer on my local carpet track, especially in the entrance of fast corners . My current setup: all stock, rear spring: silver front upper link 3mm thick shims.

So I have several setup questions:

Are there anti roll bars for the 18R available?
Which springs are available for the associated shocks apart from the associated ones?
How much toe in does the rear end have out of the box?
Do you race shock limiters on carpet, if yes, how thick are they?
Are steel turnbuckles available for the 18R?
Are there different caster blocks?

What other changes in setup do you suggest?

Thanks Nic