I replaced the all balls seals for the EO seals because i was having a faire amount of stiction to my taste, added fresh oil and i’m going to test again this summer. The issue i’m having is that when i ride at the speed limit the suspension is plush enough, but as soon as i send her, it become too soft, the front dive in high speed curves with bumps and become hard to control, the 10mm oil level higher is to try to compensate for that, hopefully compression will become stiffer as the stroke bottoms out
On the stiction, there's individual stiction (fork legs alone, removed from bike), and there's the fully assembled stiction (with the wheels and triple clamp tightened), and the later deals with 'straightness' of the whole front end. Suggest you look into this. Grease the lower stanchion just lightly, and allow a thin coat on the exposed section, especially after a wash.
My stanchion is rainbow colored that looks like leaking seals, I don't mind it, as long as I care that it is lubed for the seals to travel happily.
From your description, I'd surmise (guess) that the fork is losing control when ridden aggressively.
Fork oil warms up just as shock oil, but slower. Once they do, they lose damping because warmer oil is less viscous. Suspension is best tuned when warm, and Dave Moss have a fork warmer for this purpose.
- Do experiment with the compression and rebound clickers. More damping = more control, and sometimes increase harshness, so there's the compromise.
- High end cartridges provides similar level of control, but less harshness. So we get more feel and feedback without the anxiety due to the harshness.
On my side, due to the climate (summer, all year long) we choose to go up on fork oil wt. i.e. 2.5wt to 5wt, or 5wt to 7/7.5wt, or even 10wt. Look around for fork oil viscosity chart for better understanding.
Use good oil for suspension. Silkolene RSF, Maxima fully synthetics are some of the consistent ones. Maybe the BPF is less susceptible to lesser oil quality but when oil travels pass the shims, there are microscopic events that affects damping. BFF is an even more wonderful system.
Spring rate is (almost) linear, but air gap is exponential as the fork is compressed. Too little air gap makes the forks too progressive far too early.
Oh, and another thing, what front tyre and pressure are you using?