Camber and Ride Height....

Also keep in mind that your strut rod length will also effect your caster setting. If the strut rods are too long, they'll push the control arm back and reduce positive caster. Alternatively if they're too short they can increase positive caster.

But the strut rods aren't there to adjust caster, the length has to be set so there's no binding in the LCA through its entire range of travel. Setting them properly may in fact change your caster setting, but that's not what they're for.