It gave me a mental picture of the pics you shared recently of your first engine build you looked pretty young
Yeah, I still make mistakes when I'm old. That's why I'm as bald as a cue ball.
That fiasco opened my eyes up a little bit. When you can pull an engine on the dyno to 5500 with .012" (twelve!!!) main bearing clearance, all these guys screaming on the internet, "DON'T NICK A CAM BEARING YOU WILL LOSE ALL YOUR OIL PRESSURE" get a chuckle from me.
That's why I said an extra .002" cam bearing clearance on one journal for the OP won't hurt anything.
I pulled all the caps off of that engine after I found the leak. All the crank journals looked perfect, bearings looked perfect, etc. I pulled the crank out, swapped in new bearings, bore gauged the clearances, put it back together, and dyno'd it again.
It had been a perfect storm for mistakes. Either someone had mispackaged a set of bearings, or I had put a set of standard bearings in a .010" box at some point. In addition, my Mitutoyo bore gauge only goes to .005". So a multiple of 5 is kinda undetectable.
Things shape your experience and "rules" over time. This is one of the reasons why I tell everyone to spin the pump on the stand, listen for odd noises, and know that certain pumps will pretty much always make the same oil pressure on the gauge with the same drill motor spinning it. Looking back at it, it had "enough" on the gauge, but it didn't have what it should have had.