so you want a snappy throttle ,pull apart your accelarator handle assembly and remove the white plastic handle and cable .using a piece of fishtank air line about 3cm long. jam the hose in the grove(use a flat blade screwdriver) where the accelorator cable lies then reassemble you will have to lie the cable across the air line .once assembled you may need to back off the cable adjuster on the throttle cable .You will find your throttle will take less turning to get to flat out cheers geoff