Magnetron modules. They fixed more screwed up engines. Trouble is they only retrofit engines so far back. Lots of stuff from the mid 60s up. The small engines. I got to the point it was about 45 minutes to take the carb off the top of the tank, take a large fine tooth flat file and gently plain the matting surface of the tank and then preload and screw it together. The magnetron took a few more minutes. Ahhhh memories. Last of those i did was early 80s. Good gravey I just looked on Ebay and can't even find them anymore! All of the coils and ignitions are one piece. Here is the hardware store version they used to sell.