Sorry I missed this.

I moved the ball studs back to the end hole with the servo mounted full forward (both servo spacers). The tie rods sweeping back reduces ackermann. If the inside wheel turns too much (from too much ackernamm) you lose corner speed.

For rim clearance I bevel the inside of the rim with an xacto knife and run the old closed/small AE ball cups. They are lower profile. I run the tall ball stud with 1.5mm of spacers to get rid of almost all of the bump steer.