Report "fuel line problem. after increaing the throttle to the point of changing gears, when i engage the clutch, the engine rpm does not go down..or u can say it goes down very slowly. it sounds like im still giving a little throttle during gear change and the engine picks up from there after that. there is a lot of backfiring happening as i changed my silencer to a freeflow one, but the mechanic says he has tuned the carbs accordingly. another problem which comes along with this one is that sometimes while giving throttle, there is a missing which continues for some time, and at times the bike stalls if high throttle is not given repeatedly. dont know if they are related, but both problems usually come together. ive been to the mechanic everyday for the past week and i think even he is baffled by the problem. please give some insight as to what the reason can be"