yz426 woes

hey guys i recently bought an 02 426 for trails it has a auto decrompessor cam and a gytr slip on pipe but when riding it hard on a moto track the quick on off throttle hits it sometimes starts to miss and pop and won't come out until i back off the throttle and roll back on do you guys think the accelerator pump diagphram is leaking or is it just jetting any suggestions please the bike works fine on trails though

checked the float bowl level lately??? i know that was a problem of mine in my 426 when jumping... would jump and it would seem like the bike just died in mid air had no throttle until i released the throttle and grabbed another hand full then off i went.

send the carb to zipty racing... there carb mod is nice

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