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Dunno.. Microsloth makes some mostly good apps. Hard as hell to organize or add comments.Now I'm down to hearing just a slight miss every so often. Not repeating, not a sticky valve. Nothing I can hear when probing with my stethoscope. But I can see the RPM and timing change every so often.
My guess is O2 sensor is lazy or contaminated with the excess carbon caused by a cracked header.
That or ass monkeys.