Chasing a phantom miss on a 6.7 for 11 hours straight

Finally found it after wasting a full Saturday on a 2015 6.7 that would stumble only under heavy load. It wasn't fuel pressure or injectors, it was a chafed wire harness rubbing on the fender liner that grounded out intermittently. Anyone else ever gone that deep and it turns out to be something dumb like a wire touch?

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