"Wobbly" trackball?

[CmdandCtrl]

I've got an Ultimarc trackball and for lack of a better way to describe it, it has some "play" or "wobble".  A video (with sound) says a thousand words so made this little recording to demonstrate the issue.  I have tried cleaning it and adjusting it in the past with no luck.  I'm guessing the experts here might have some sage advice for me?

Video:
https://imgur.com/a/9hAOy3O
(Sound up for best effect)

[Xiaou2]

The video is one thing... but since we cant see inside... its hard to spot any mechanical problem

Post a video showing the internals, and you rolling the rollers (with pressure), in various directions.

Not knowing how their TB is constructed.. Im thinking its possibly a bearing that is popping out of place, when pressure
is applied to the rollers.

This could be due to a partially broken or cracked post