2.76 open to 3.55 Sure Grip...expectations too high?

AJ/FormS said

Average 133
I'd say the Wallace is right on target
And I'd say there's your power problem.
Now, what to do about it.....
#7 cylinder is ~10% down from the average, but #6/8 are 5% higher. So Ima thinking you need to do a LeakDown test, cuz something is goin' on in there, in it can't be good. That is what I would do.
Looking at the plugs, what Timings are you running? Looks a hair lean to me, and a hair hot.
@yellow rose ?

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Timing is 14 initial and 32-34 total. I played with it a bit, thinking the engine might not want that much advance, but 14 was right around where it seemed happiest. I do plan on revisiting the timing just to be sure, but I played around with the idle mixture when setting the timing, almost to the point to where I thought it might be on the rich end of things.

I’m still very much practicing and learning, so it’s sometimes confusing to me as to which I need to do first, and why. I.e. idle mixture vs. timing.