Posted 10/18/2021 06:39 (#9274883 - in reply to #9274476) Subject: RE: JD 510 or 512 - Disk blades
NY
You can put the 22s on, I think that's what came on mine originally, but the 24 seems to work better overall. I do notched blades on the front for my corn stalks, helps stop any pushing.
I don't know that it's "factory" to drop down to 22 then to 20 on the rear corners but it works great and makes sense