getting more steering on throttle in my TLR 22?

[vrooom]

How can i get more steering on throttle?
it is bit little understeering. rear end is very stable.

I run rear motor, with stagger rib upfront, minipin/minispikes rear.
I race on indoor carpet / outdoor grass.

My 22 is standard setup wise. TLR kit version.

What can i do/buy to make my car to be less understeering on throttle?