Originally Posted by rc_square24

The ball end itself will not change the amount of caster you have, the clips that you put in between the upper arm and caster block does that (ones that clip onto the upper hinge pins).

I think the upper ball ends ideally should just be positioned parallel to the top of the ball that is inside it (i.e. perpendicular to the kingpin angle if viewed form the side). If not it might hinder the arm movement.

Heres another question.

On my 5.1, the balls are pretty tight inside the eyelets, are they removable once snapped in? Will replacing with the coated steel balls from AE relieve the problem? Any other tips on freeing them up?