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Would it help if I installed +.020" rings and gapped tighter

Not in my opinion .
Larger rings will impart more friction throught all 4 strokes ... not just the power stroke .
ring drag is necessary to seal but it's also a waste of power .
spring load is supposed to be just enough
and
compression and power stroke get behind the rings and add to the rings spring-seal .

Someone else , the engine designers and ring- manufacturers have already done the hard thinking on this .
each oversized is designed to work in a bore-range .