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i realize this is not an "answer" but i've done a fair bit of precision measuring over the years and when i see people talking 10ths i'm leery. i'm not questioning you directly but imho it takes a lot to accurately measure .0001" with accuracy and repeatability and i have a pretty nice selection of metrology tooling for a backyard hack

how exactly are you measuring these clearances?

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Micrometer and dial bore gauge. Very repeatable. (no plastigauge here )
Measure crank with mic, set dial bore gauge to the mic and measure the hole.
I can live with #1,2,4 & 5, but #3 is just too tight to suit me.
I agree that to measure .0001" is somewhat subjective when the tool measures .0005".

Brian

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