RE: ZXX engine interference
I would be tempted to point my finger at the crystal at this point. They will sometimes be intermittent before they go bad. Another thing that comes to mind is the Trex 500 guys and their static electricity problem and similar symptorms with the tail belt, they use food grade silicone to lubricate the tail belt and minimize the static. I don't see the remote glow adapter causing that much trouble, especially because it is dead weight after the engine is running.