hi guyz . i have a yamaha rx 135 . it has very less pickup . i have tried boring the cylinder . usin 2nd oversize original piston . i have even chaged the jets and also tried replacing the filter with a k&n. i changed the clutchplates and pressure plates, i tried removing the powerbox , i checked the reedvalves . but it does not help . can somone plese tell me why and how to increase the pike pickup ... i have spend loadz of cash on my bike but i just cant get good pickup .... pickup meanin there is no way you can do a wheelie even in the first gear ..... plz help me .....