Changed the oil this year, and added 2.5l with no filter change. I follow the instructions like last year. Dipstick dry. Ok.
I add a bit more oil. Follow the instructions , 10 min idle, bike vertical etc. Dipstick dry. wth?

I add a bit more oil, confident that this should now be enough. I go for a ride, come back. Let it cool down 5 minutes. I check the oil. Oil almost too much. Barely bellow the top line on the dipstick.

I drained a bit of oil from the screw that's under the engine. Go for a ride, let it cool 5 minutes. Still too much oil, if not more. Oil now above the top line of the dipstick.

I think next thing is to try and drain some oil from the engine this time, front screw, and hope I can put the screw back without making a big mess.

Any ideas?

you could use a turkey baster via the dipstick ....i did...

Drain bolt is in the front of the frame below the fork yokes

Isn't the overflow for oil under the airbox? The little hose that's usually sealed with a rubber cap.

No idea. I did what nikroc said. I used a hose through the dipstick and removed a decilitre or two.

i thought that was a breather pipe...