Need help with missfire under load on 340

RustyRatRod said

Does this occur at part throttle only? In other words, if you stand on the gas hard when it does it, does it stop doing it?

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ive only went wot once while i had it out and it still does it, doesnt seem as bad but its definitely not happy. Before i would only have this issue for about 5 or so miles than it seemed to run good, today is the first time ive had it run this poorly