2006 KTM 250SXF with 20 hours. There has always been a bog with quick throttle application. The fuel screw has never seemed to do much. So after a lot of research, I installed a JD kit. Now when the bike first starts everything is normal, but when I touch the throttle and let it go, the idle hangs really high. After a while it will drop down to normal. The hang time is longer when the bike is hot. I removed the JD kit piece by piece and the needle seems to have the biggest affect, but even the stock jetting now has a little hang to the idle. No air leak, no clogged jets, no cable bind, no slide sticking, no clue what to do next.