Ok mine starts fine when cold, but very hard to start when warm. In fact its almost impossible to start when its warm. It winds over and winds over, and after a LOT of winds, it starts to gently sputter, then clutter, then flutter!, then START!!. When it starts the idle is VERY slow, and slowly starts to increase by itselft and eventually stops at about 2000. Most of the time the battery will start to chug before it gets a chance to start. And its pissing me off because im a mechanic on cars and its quad carby and i havent worked on many carbies blah blah. But yeah its a quad carby Kawasaki ZXR250r 1990 model. Starts fine cold Choke very sensitive Almost impossible to start when warm. Idle is very unstable when cold (2000 one second then goes up to 6000 and sits there, etc) pls help. *Dont say battery cos its brand new and it cranks really fast.