KX65 won"t Idle....

[lhazc]

we have a 2001 KX 65 that wont idle.  checked the jets, they seem fine,no obstructions, changed the plug, air filter doesnt look bad. whats next?? could the reeds be wore, would that do it?
 when it's started he just has to keep bleeping the throttle until he takes off, then it runs fine until he hits Neutral or clutches it to stop.....

 thanks

[lhazc]

not sure what I did, the third plug and some screw turning, it's doing fine again.......