[Resolved]  Bajaj Discover 125cc Dtsi — engine sounds,timing chain sounds

dear sir,
i on a bajaj discover dtsi, but i am facing a great problem of the engine sounds, ia have already changed the crank of my bike within the warranty period, but still i am facing the problem of the same sounds. moreover i am facing the problem if sounds from the timing chain which i have changed recently 2 months ago.i am frustated of this problems of this sounds. please help me to get rid of this problems .