Forking Forks !

[unfazed]

4 items could cause what you describe
Brake Pad Pins - You seem to have ruled this out
Worn Fork bushes  - mileage probably to low for this
Wheel bearings. - Remove calipers and lift the front . Grab wheel top and bottom Try and rock it left and right
Head Race Bearings - If they are not notchy then it might be worth while retorquing them.
Cover the tank to prevent damage.
Remove the handlebars (makes the job easier)
Loosen the top fork pinch bolts
Remove the steering stem nut and washer (This is tight 113Nm)
Lift off the top yolk
Remove the lock washer
Remove the first ring nut
Remove the rubber washer
Loosen the second ring nut
At this point decide if you want to go further and regrease both top and bottom bearings
If you decide not to, then
Tighten 2nd ring nut to 52Nm - Requires special tool to do it properly. I made one out of an old rear shock adjusting tool.
Loosen it again (not to much) and retighten to 18Nm (do not tighten more than 18Nm)
Refit the rubber washer
Refit the top nut and tighten to a good finger tight and refit the lock washer.
Refit the rest in revere order of removal.
The steering stem nut is 113Nm
Upper Fork leg pinch bolts are 26Nm
Hopefully that will solve it.