Brand new main bearing nicked. Usable?

70Duster440 said

I'd say don't sand anything. You'll make it worse. The material is intentionally soft so debris will embed rather that score journals. Worse case, scrape a high spot with a sharp blade and leave it alone. A tiny pit in the material won't make a lick of difference.

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^^^^^^^^^^^^^^^^^^
Never use any "grit ' on a bearing , scrape the hi spots carefully, barely touch w/ fine scotch brite if u want.
I know a guy that scotch brites bearings occasionally to get about a 1/4 of a thousanth on each half , never has one come apart that I know of.