Martin was essentially right firt time.
Grip damper is a grip damper, there’s no different version for 2pos/3pos..it’s the remote lever that takes care of that. The link above is for fit4 which is entirely different.
The fork pictured is push to lock
So, start with a new inner as that one’s knackered.
Lever in locked out position, rotate the blue knob CW against its own return spring tension with an Allen key to the locked position..i.e a hard stop
Insert and tighten the grub screw. Doing this first without a cable in place will show you if you have access the the grub screw when in locked position..it may be hidden by, or past the cable port in the housing, in which case you’d need to make alterations
So yes you may have some “clocking” issues and this can sometimes be sorted by lifting the black cable housing directly upwards and rotating it to change its orientation relative to the grub screw (also may alter how much oiter you need). This is a “loosen and lift” job vs unseating the entire blue knob where you can change the blue dials position but this involves a spring and getting it seated/tensioned.
Vid here of the relevant damper and lockout
https://www.ridefox.com/fox17/help.php?m=bike&id=1028