My pro design kill switch will not start when the landyard is out, which is normal. When the landyard is in place, it will start, which is also normal. However, when I pull the landyard while its running, it will not kill the engine. I cannot figure out why its not killing the engine when the landyard is pulled, especially the fact that the engine will not start unless the landyard is in place... anyone have any thoughts?? I checked all the wiring, its fine, I cleaned the switch with contact cleaner, its clean and not dirty. Could the switch be bad already? This is my 2nd one in three months....