Sounds like it's the big end of a rod bearing with that size. Sorry I said it was unlikely earlier.
What do I win for being the first to suggest it though? Don't roll it off the cliff just award it to me and I'll fix it! Don't sweat it, last 1.5 years ago I plumbed my
oil lines backwards and spun #8 rod bearing. I don't call myself "Chairman of Trial & Error" for nothing! Best wishes! You'll be spinning in no time - just not the bearings!!!!