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Glad you have it working again.
Just to try to clarify:
- Pertronix generation 1 works exactly as the old points system, i.e. can overheat the coil if ignition is on and the engine is not running. Depending on the coil, this system usually needs a ballast resisitor.
- Pertronix generations 2 & 3 have built in electronic current limitation to prevent overheating of the coil with ignition on and not running the engine. These systems are usually used without a ballast resistor, but it depends on the coil.

Never use an Ohm-value lower than minimum specified, as this will cause the current to become higher than what the electronics is designed to handle safely.
However, to get maximun energy to the sparks one should choose a coil that has the minumum Ohm-value allowed for the ignition system used.

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