This setup sheets mistake shock length. Front shock length 20mm. No, use limiters! If no use limiters shock length 22mm . So use 2 limiters 20mm it is true.

Do you still use standard rear drivetrain (YZ-2 rear bone, Bmax2 rear axle, and 6mm hex) when using YZ-2 rear arm per setup sheet?
YZ-4 is same axle YZ-2 and Bmax2. Low traction is much better YZ-2 arm
6mm hex hub is standard YZ-4