Jetting help!?

[ExDevil250]

I have a 250ex and with a Pro Circuit T4 pipe. I also purchased a jet kit and put in a 108 main jet. I have a K&N Air Filter in the airbox. Anyway, the jet kit is nice. It is keeping the pipe from backfiring. I have one problem, though, and I want to know if other 250ex owners are facing it or know how to fix it. If I jab the throttle to wheelie or accelerate qiuckly, the throttle does not respond. It is almost as if there is a delay or the throttle is not responding quickly. Does anyone know how to fix this?

Please help fast.

[cals400ex]

i would look at your plug and see what color it is. i don't use dynojets so i can't help you with sizes. all i can say is jet it exactly as the directions say and fine tune if from there. is it missing at full throttle?? at 1/2 throttle?

[ExDevil250]

If I slowly hit the throttle the machine runs fine. I'll check the plug. The throttle just stumbles from around 1/4 to 1/2 throttle. I want to be able to jab the throttle, but it just doesn't respond.

[cals400ex]

1/4 to 1/2 throttle ranges is the needle. make sure the clip is where is should be. sorry, i don't use dynojets and i don't have a 250ex.