This now lives on Printables and may not be up to date on Thingiverse

None of the existing z-axis stabilizers for the Ender 3 V2 fit correctly or used M5 bolts with drop-in t-nuts to attach so I created my own.

You'll need (2) M5 x 8mm bolts and t-nuts and a 8mm x 22mm x 7mm ball bearing.

The bearing is tight so you can mount it upside down. Depending on where you place the seams you may need to tap in in with a hammer.