LA 360 - 0.030" Undersize Main Bearing Clearance Questions

I read no more than .0002 should be polished off the journals. THe article didn't say why. Those clearances are a bit tight. My 273 had 1 or 2 that were just under .001 but I ran it. It's been running for 14 years now without an issue.
My research indicates the same and the reason seems to be that there isn't a good way to do this without introducing egg (out-of-round) and taper into each journal. Since I'll be spending a fair amount of time at the track, I'm probably stuck with getting a new crank unfortunately. Just don't want to risk it.