i have cg125 2016 model euro 2 whenever i accelerate my bike to high rpms it is doing misfire like plump plump and sometime like thus thus sound. while deaccelerating i dont know what is the cause but while accelerating it does not misfire like on 8rpms if i decrease throttle it will misfire dont know what it is can please some one help me about what to do?its 1600km driven ..its a new bike it should not show this behaviour.