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Engine compression too good?

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Engine compression checked last year on my A65-8F was 74, 74, 72, and 78/80 cold. Yesterday, results from the same IA using the same equipment were 79, 79, 76, and 79/80. Is that even possible that the numbers have gotten better?

This is a fairly low-time (110 hours) overhaul from a reputable engine shop. I don't need to add engine oil between oil changes. IA reports no air noise at the rings or valves during the checks. The engine has no oil leaks or seeps and only seems to lose what little oil blows out of the breather hose, ending up on the belly. This is light.
 
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