Even with electronic ignition RF still applies and can be a problem. Resistor plugs, shielded plug wires and all have made it better but you still need all of what you already know which is no metal to metal from the engine, no lose metal connections like clevises with lock nuts, muffler bolts, etc. On metal pull-pull cables you put a tube of one of the cables to keep them from rubbing together, personally I use Kevlar 100lb cord on my 50cc planes, way lighter and no way it's gonna create RF