Cylinder balance test question

I have been having hesitation problems (only at WOT) to 3K then the car rockets also I get afterfire. I got rid of all codes so I get code 11 (koeo) and code 11 (koer). When I run the cylinder balance test I keep getting different cylinder numbers every time I run it. I was wondering what might cause this problem.
 
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Amongst other things, I'd take a look at the 10 pins and plug wires (leaks at different times could cause a miss in different cylinders).