bearing help

Main bore, std, with bearing in place, measured at 12 and 6 o'clock, should be 2.625.
Main bore, .020" over with bearing in place, measured at 12 and 6 o'clock, should be 2.605.
Crank's main journal, machined .020 under, should measure 2.6025.2.603.
Oil clearance, measured at 12 and 6, with all parts at 60-70° should be .002-.0025".

So if you measure the crank at 2.6015 then the oil clearance should be .0035".

That being said - Measuring everything in the cold (40-50°) with a mic and dial bore will show size differences - so parts should be left in heated space for 24hrs to warm up.