After my bike gets hot it will not start. Sometimes it will start but it acts like it jumped time . It will idle erratically but as soon as you give it gas it will stall. I can start it back up and it will be fine but that's only untill it gets hot again. Ive adjusted the valves numerous times. I replaced valves also and put a Yoshida Cam in it but it's still doing the same . I was thinking maybe the stater . iIf anyone has any ideas please help me out