I drove the bike yesterday. I've never driven it that late in season before, 29:th of October. +10 to +5 degrees C.
Today raised the needles in my carbs 2 steps richer, clip in lowest groove when carbs still run lean at 4000-5000 rpm.
Needles are tricky. Engine run fine for 30 minutes, then starting to run lean when warm. I finally found out that the needles is the only thing able to cause that, thicker when warm. Lets see if highest position is enough or if i need to buy new carb stuff again. Needles this time with thinner tapering around 1/4 throttle lift or 20-25mm down the needle.