'54 Plunger B31 - should I have a ball bearing

[Fraz]

My bike has a ball bearing that sits in the clutch adjuster (part #31) and is pressed on to the push rod by part #30 when the clutch is activated.

The parts diagram attached doesn't show this ball bearing

Should I have a bearing or not?
That's my question (having mushroomed two push rods)

Thanks

[neil1964]

Can only comment on the s/a version but the ball is set into the adjuster screw on the lower pivot arm