I got my new motorized bike kit put together and everything was working fine. But now im having problems with the idiling/throttle. The bike will run fine for a couple minutes, then when i try to give it gas it wants to bog down. When i stop and hold the clutch in it revs real high. I have changed the carb and throttle cable and i still have the same issue. I have also tried adjusting the idle screw. Any possible solutions or ideas to help me fix this problem?