So I have been fighting my M for eight months now I have tried everything I have read in this forum I currently have an internal resisted coil end it continues to get hot tractor starts fine and runs great for about 30 minutes and then starts missing sputtering and the coil is always too hot and I can't figure out what to do initial problem was the external resistor had burned out I change the resister and it took me a while to find the right one here on the forum after changing to the recommended NAPA part number I thought I had her fixed unfortunately she started missing again I then tried replacing the alternator and again it failed I am at a loss of what to do about ready to take it to a mechanic but it has become personal does anybody have any ideas she ran fine until the resister burned out I I am now on my third coil and have currently eliminated the X ternal resistor?