When you go around a corner…
When you go around a corner and let go of your steering wheel and it returns itself to the center it is the caster angle of your “king pin” that causes that. That also allows you to let go of the wheel and expect your vehicle to go stay in your lane and not go into the bushes. Messing around with lifts and pinion angles etc can mess that up. That’s is why new ball joints will change that angle and cause it to be undrivable. You may need to twist the axle slightly to compensate