Cylinder hone or bore oversize?

I just measured the crank and frankly I am astounded. This engine had 110K on it when pulled.

main journal spec is 2.8095 to 2.8105 stock. Mine were all either 2.8095 or 2.810. .005 variance? really? with no perceivable taper or out of round
rod journal spec is 2.124 to 2.125. Mine were all 2.124 on the money, also with no perceivable oor or taper.

Technology must have gotten WAY better over the years. When I measured my 68 273 steel crank at 135K on the odo, there was several thou of orr and taper on every journal.

I do have one question though. I can feel some really small grooving on a few journals with a fingernail. Should I give 'em a tiny polish with a strip of emory paper? if so, what grit should I use?