Well now you know it’s time to pony up the cash for a oem coil. It’s one of those things I wouldn’t bother with buying a used one for this particular model. On this model saw, the coil sits right under the muffler and gets hot. Most tree guys and loggers never clean off the sawdust that builds up in there as often as they should.... the coil gets even hotter from all the buildup = failure. A muffler mod in the least would help this a bit since there would be less heat next to the coil.