I've got the 2" boring head (from LMS). I cranked down on the locking set screw (middle one) too hard and cracked what I thought was one of the two steel balls in between the screw & gib. As a quick fix I tried a BB. It fit, but the set screw sticks out pretty far.

My questions:
- Are there really just two steel balls (5/32" Dia) in there, or is there one ball with something else? I don't remember it the screw sticking out that far.
- Is there a better way to accomplish this without using two balls?

Tom