jetting

hey all, i recently bought a YFZ468 thats running terrible, valves are in spec. Im at sea level and around 50°F. just wondering what you guys are running for jetting.. no airbox lid, k&n filter, hmf slipon

08 YFZ 450, I am adding a Hot Rods +3 Stroker Kit. Rest of the quad is GYTR stock. The question is: once I add this Stroker Kit, does anyone have any ideas on the size of jets I will need, or should try? I would say this quad has never been opened up, and stock jets are in place. Air Lid...