Rock Shox coil dual position question

I've got a Sektor RL Coil dual position fork, and decided to do a lower leg service (having never done this before).
All went well and it feels as plush and good as new, but the dual position is no longer working. This is where I can normally drop the travel by 10mm by twisting the knob and pressing down on the fork.
Now I can't even twist the knob?

Not a major problem because I rarely use it, but just want to understand why.

The oil chart (attached) states that I should put 10-16ml 15wt in each leg, or at least that's how I read it. So I put 12ml in each.

Could someone shed some light on this?

Don't be too harsh, there are no coil tutorials lol.