Balls.....

  PJ1 and Bel Ray motorcycle fork oil in SAE 5 weight are excellent choices as they are extremely low viscosity and work well with tight clearances.  I use this in my Platine Verdier turntable and it does not require lengthy warm up times due to the ultra low viscosity.
Ceramic ball bearings are available from McMaster Carr on line for very low cost.   

In a similar mode..I replaced the standard Rega subplatter on my RP6 with the Groovetracer precision subplatter....Big improvement...On any TT, if the platter turns as friction free as possible and the tonearm is as friction free as possible in both horizontal and vertical movement, you can get the max data off the LP....Analogue playback is a VERY highly refined mechanical process....As Art Dudley would point out, vinyl playback is the only type of domestic audio that does not need electricity to "read" the data off the LP....Of course, your speakers or headphones couldn't reproduce it without electricity/amplification but the data can be picked up off the "software" without plugging it in....consider that and the importance of getting the main bearing and tonearm to work as friction free as possible and you are on the way to understanding how to help optimize vinyl playback.

I upgraded my TT ball bearings, not with ceramics, but with Mobile 1:  Amazing lack of rotating resistance. You ceramic ball users should try it.

   Have not tried the Bering mod yet . However I run ceramic bearings on my bicycle, especially enjoy the crank bearings. I run Full Synthetic Motul in my stage III Buell with NicaSill cylinders,   partial synthetic Motul in my Roadking . Many of the V-8 powered race cars that display oil sponsors run Red Line 5wt. Also exotic metal coatings and Cerakote on my semi and full auto firearms is a huge plus. There has been for years a huge following of molly coated bullets for bench rest shooting . Sorry the be off topic but there’s a huge crossover as mentioned above . But since I can’t leave stuff alone , I’m going to dismantle my TT . Woops I just slipped off my chair , bye bye. 👋 

PJ1 and Bel Ray motorcycle fork oil in SAE 5 weight are excellent choices as they are extremely low viscosity and work well with tight clearances.  PJ1 also offers SAE 2.5 weight which will provide less friction and less stress on the motor.  Some turntables use the friction as an eddy brake for speed control so test them both out to see which works best for your application.  A pint of fork oil is fairly inexpensive ($10.29 at Amazon)..
https://www.amazon.com/s?k=pj1+oil&hvadid=78065392571171&hvbmt=be&hvdev=c&hvqmt=e&am...