Bike failed to start one day after running well for months. Had power coming from the magneto as tested at the black wire that connects to the CDI/coil unit but no power at the spark cap. Foolihly assumed the unit was bad. Replaced the CDI/coil and still had no spark. Tested the ignition wire, which was good, and finally the spark plug cap, which was the issue. Running thru a search on the Army site found a ten year old post from Donp where he notes that NKG caps should be thrown in the trash as they are nortotious for this issue. Hopefully learned to do more testing before snap decisions.