Hi, I have a 2000 CBR600F Ultima Light. Just recently I have had issues when starting my trusty bike. I put key in ignition, turn it, then press the starter button. It doesnt attempt to fire, all I hear is a click but, on the very odd occasion it will start. I have ruled out the battery by trying a new one on it. If anybody has any ideas what it could be I will be very grateful. Thanks