I'm a alignment technician at my shop, i would recommend doing one. The reason i say this, is because your "caster", may be a little positive or negative. This measurment, is when the whole strut and wheel assembly is tilded forward, or back. If it's to positive or negative, it may cause a hard pull either left or right, depending if it's to positive or negative. Srry for the long post. :stab: