OK, I went to the CH Ignition web site and they tell you how to test the unit. They say to ground the white wire from the female deans plug and if the plug fires, the magnet is reversed or the pulse switch is no good. Well, the plug fired fine so since I didn't do anything to the magnet it must be the pulse switch. Now my question is: How difficult is it to replace the pulse switch? Also, Do these things fail on a regular basis? This is my first gas engine and I am wondering if this is normal maintenance. Thanks for any insight..