the angle of the turnbuckle from front to rear effects ackerman,vertically effects bumpsteer.i normally set my bumpsteer to none or a little bump toe out.if you are running the servo on the aluminum AE angled mounts,i run the turnbuckles at the same angle as the upper arm.this gives me no bumpsteer.i run my angle of the turnbuckle dead straight looking at the car from the top.