Centipede Trackball OCD

Another rabbit hole I go down trying to decide old bearings or new bearings, oil or no oil, old rollers or new rollers. The one thing I know for certain is the screw size to hold the trackball case together.
Some info links. Bearings are R4ZZ (vs P4ZZ i say in video)
Stainlesstown bolt measurement tool.
https://www.amazon.com/Stainlesstown-...
Klov Threads on Track Ball bearings etc.
https://forums.arcade-museum.com/thre...
https://forums.arcade-museum.com/thre...
ArcadeShop Trackball repair kit
http://www.arcadeshop.com/i/16/2-trac...
Paradise Arcade Bearings
https://paradisearcadeshop.com/home/c...

00:00 Intro
03:55 "testing" bearings
09:00 bearing oil difference
15:20 boltsizeit.com for case screws
18:34 Decide to install replacement parts
23:00 Disassemble and Reassemble
30:43 Oil vs No Oil?