my bike gear is hard to shift while shifting up it feels little bit easy but while shifting down it is hard. another problem i was riding my pulsor 220f on street road one scooter came and over take me. we were two person on bike i also accelerate full throttle and when i chaged gear from 4 to fifth gear was stucked ok locked sound camed from engine i was unable to change gear from 4 to fifth so changed to third. after this i feeled gear is soooo smooth like butter. every thing changed acceleration also smooth deceleration also bike feels like a feather.before it feels heavier. but after some day i changed the air fuel setting and again ride it and again gear is hard to shift whats the problem.before when the gears were hard i can feel piston moving up and down as it is knocking me and can feel it on my seats this can be feeled on idlegear .