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2003 yz 450 rejet? fuel screw?

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Hi i have a 2003 yz450 and blew the motor and just put an 05 motor in, the previous motor had stage 2 hot cams qne im just wondering if i should rejet because i no longer have hotcams, the bikeicon1.png is a bit harder to start than it was with the other motor. I also have a full yoshimura trc pro series exhaust. What should my main jet and fuel screw and all that be set to? im in Michigan btw..

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