here's an idea go away from the key theory, iv broken so many keys its not funny, and changed the keys/starter on control box, so iv gone away from that, iv installed 3x switches, 1x flick switch(on/off) for egnition, 1x push button for choke, 1x push button for starter to turn motor over untill it starts. so initially you would flick your switch on, then you would push both push buttons on untill it starts, and when you want to turn off your motor you just flick the switch in off position, and when starting while motor is warm just 1x push start button. fun times and no hassles with breaking keys and faulty key ignition starter, in australia those parts cost around $50aud ignition and 2x keys.