too much front end grip

[Moose]

I am using the rear motor car, set up like Dustin Evans, driving on clay with quite a few dust, 4rips and holeshots
The car has quite lots of steering and is super hard to drive you have to be very patiant not to spin out.
Feels like there is too much front end grip.
I tried a few changes that made it better but not perfect. (inner shock position front, outer rear, 10 degree front caster)

Do you limit the steering end points and use much expo ?

I am very confused because I didnt have problems with other cars on this track and tires