04 Rmz 250 Bogging

I have searched everywhere for a solution to my problem but still have not fixed it. when i give throttle it will bog , if i slowly twist the throttle it will build up , however it will bog when i twist the throttle quickly or if i try to drive it . The valve clearances are in spec and the timing is right , i have cleaned the carb a few times and have played with the fuel mixture screw which did help a little but not enough. i noticed that there seemed to be blowback in the carb (air was blowing back through carb).the bike was running fine until the cam journal was overtightened and warped , this meant that the cam would not turn easily, i have fixed that now and now it bogs , i also noticed that it seems quite easy to kick , but that might be because before the cam was so tight it was harder to kick.  I really do not know whats up with it ??

You mod the carb? Google o ring mod. It helps.

O-ring the AP lever to the throttle cam. Screw the screw in almost all the way. File down the nipple on the AP diaphragm 1 or 2 mm. Get a smaller leak jet. 35 or 45.

Are youre jets stock? Any air upgrades done?

This is common with the pre 06 fcr carbs.

You mod the carb? Google o ring mod. It helps.

O-ring the AP lever to the throttle cam. Screw the screw in almost all the way. File down the nipple on the AP diaphragm 1 or 2 mm. Get a smaller leak jet. 35 or 45.

Are youre jets stock? Any air upgrades done?

This is common with the pre 06 fcr carbs.

Also use a bigger pilot

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