hello! every one i am facing problem with my pulsor 220.problem is my bike knocks while riding at low rpm.knocks means it says to change gear while i am at low rpm. it makes me to ride it difficult. another problem bike is very difficult to ride at stones road at low rpm. means gravel roads. at gravel roads i always try to ride slowly but it is difficult.while i change from 1st gear to second gear riding at gravel road it is not much difficult but when i change from 2nd to 3 gear at low rpm bike starts to knock like.knocking sound is gone when i pulled clutch little bit.if i do that it goes well it is not possible to ride like this this will make clutch wear .another problem suppose when i am riding my bike at 2nd gear and when i ride it at third gear and the speed is about 40 kpm.bike is running now i leave the throttle and i havent pulled down the clutch bike is now decelerating now bike speed is slowing down rpm is also slowing down when again when i try to accelerate it bike wants me to change gears from 3rd to 2nd and bike deceleration at low rpm is also not smooth it gives little bit hiccups.what is the problem i dont know.