My wire that goes to the on/off switch is just "not there" and obviously the on/off switch has no use. Saw runs until you pull plug or use choke. What is the best way to get to the ignition to trace down the wire or add a new replacement wire. Do I have to take the darn gas tank assembly off to get to the ignition? I hate to take it off and mess up gaskets,etc. but if its the only and best way to get good access....well, I guess I will have too. I believe I am beginning to feel the 031av is a real PITA to work on. Great and durable saw though!