Hereis the top secret inner workings of the DL/RcExl plug cap revealed. In the first picture you can see the broken off post of the resistor right below the cap, this is all that was wrong with this dead ignition, the second picture shows a new resistor and how it contacts the small spring that hits the spark plug if it's pushed on all the way. The resistor is there because the CM-6 type spark plug is to small to fit one in the spark plug to suppress RFI.