I have an 06 Rmz 450 that is carbureted. I recently had the engine rebuilt and put Stage 1 Hotcams in (Intake and Exhaust). When I hold the throttle at the same RPM's, it sputters. It almost seems like its not getting enough gas but I could be wrong. This happens even when riding it. I know this is something to do with the jetting but would like some advice on how to fix it. Will adjusting the fuel screw help or will I have to go with bigger/smaller jets? Don't know what kind of carb it is, but it is stock.