Hi all recently bought a 17 st 250 factory, went practicing today and the engine was warm went to engage gear and the bike was stalling / leaping forward, using the adjuster on the lever I maxed it out and the best I can get is as soon as the lever is not touching the bar the bikes wants to go, which is far to low to have control at low speeds, any ideas? Bike is brand new and has done 3 rides, cheers.