guys, i just got my gk76a back from workshop after being messed up by myself till its unable to start. i let it warm up before i test ride. when idle i tried reving it to check for black smoke, whether its running rich. but it was abit hard to high rev. then the mech told me its like that, just go for a test ride, its different. when i test ride it, dragging the gears till over 8k rpm wasnt a problem. so i'm wondering why its reving is like that? normal? havent really test out the bike as when on the way home was raining + heavy traffic.

latest update, when riding, if i'm not wrong. as i hold the throttle, rpm hang @ 8k for awhile then shoot up fast. which part could be wrong?

Jammed throttle cable and air leaks!??