2003 yz450 rejet? Fuel Screw?

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 bike 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...

Probably start with a 158 main, needle on clip three and a 45 pilot.

Fuel screw of course, adjust to suit for a perfect idle with a hot engine.

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