replacing the lower ball joint on my truck and JUST on the inside of the very back of the steering knuckle/spindle/hub---right where the CV axle ENTERS the knuckle (where the little rubber seals are) there is a circular, round, tightly wrapped spring like thing...mine is chewed up pretty bad and I want to replace it but I'm not sure what it is and cant find it on the XterraParts.com breakdown on its site and how it needs to be installed...Anyone?