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can someone help me please?

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i have a 08 yz250f i bought the bike used it had a fmf factory4 muffler and a mega bomb head pipe. now the kid i got it from said he did jet the bike to the pipe. now i just removed the fmf system and installed a complete new stock system. now the bike has a dead spot just off idle and if i crack the throttle while running down the street it has another dead spot. this is where i need the help i am not good with trying to figure out what jets to run and where to set the screws etc...i live in SEPA and ride the coal regions of PA would anyone know a good starting point for me...

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Bog upon acceleration is your accelerator pump. Make sure it's working first. If its working make sure it's timed correctly. Then try the o ring mod and a smaller leak jet. Once you got the ap figured out then work on your jetting if you still have a problem.

http://www.thumperfaq.com/ap.htm

http://www.thumperfaq.com/ap_mods.htm

http://www.thumperfaq.com/jetting.htm

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adjusting the ap with out question helped but there is still a little bit of a bog i am gonna ride it once and see how it is where i live and where i ride are very different in elevation

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