At last she rides nice.

[Tompasio]

Have now changed the o-rings to the intake boots.Now she accelerates like a rocket up to 140 km/h (87 mph),then she more slowly raises speed.
Maybe a little bit bigger mains are needed.
Stock airbox
4-1 Exhaust
Synced carbs
Mains are 122,(120 stock in Europe)
Valve clearence checked.

[duaneage]

Try shimming the needles up a little, maybe the pipe is leaning her out a bit

[Nessism]

Yea, shimming the needles and upping the main would be a good idea.

[KEITH KRAUSE]

I'd do some plug reads first. Don't just assume it's a lean/jetting problem.
If you're sure the bike is tuned well and the plugs look too light after 1/3 and full throttle tests, then try richer jetting.

[Tompasio]

My european model has adjustables needles,Should i try to lower the clip 1 position?

[tkent02]

My european model has adjustables needles,Should i try to lower the clip 1 position?

Is it too lean at part throttle or wide open?

If at partial throttle move the needle, if at wide open get a bigger main jet.

You DID do the plug chops, right?

[Larry D]

http://members.dslextreme.com/users/bikecliff/images/highest_rpm_plug_chop.html