Main Bearing Oil Hole Size

[ek02]

King main bearings have a 3/16" oil hole. Drill it out or leave it alone? Sealed Power 3/4 groove bearings have a much larger hole. This is a forged steel crank. Opinions?

 

[TurboDave]

The orignal main bearings I took out of mine had the same size small hole, they were still fine after 130,000+ miles.