Lets just sY that I am currently putting together an engine with a ground crank. At 90 from the oil holes some of the main crank journals measure 2.35170 while at the edge of the same 90 point they measure 2.35200
Meanwhile they get LARGER near the oil holes...to the tune of 2.36190-220
Would this be a deal breaker with plastigage? Well I suppose that depends where you measure from. Not going to get into a battle as there are plenty of engine running "fine" that were assembled while properly using it. I just prefer to do things right and dont mind the time and money to do so.
FYI my mics and bore gages are hardly "finicky". They are consistent and reliable. I guess it is the same as plastigage: It depends whether you are using it/them right or wrong.