Hoping one of you tech wizards out there can help me. My ph2 172 has started to muck about when cold starting. I put the ignition key in and turn it all the way to start the car and nothing happens, doesn't click or wind over. If I hold the key in the start position for like 30 seconds the thing bursts into life. Anyone else come across this? Only happens in cold weather. I was thinking the ignition switch might be on its way out.