Why did I spin a main bearing?
Just wanted to confirm, you said that "chunk" came out of the oil filter? I don't believe it could get thru the pick up.
I don't believe the cam would move that much with the cover and f/p eccentric in place, dont think that was a problem.
One cam brg. in perticular looks scarred but that could have come from removing the cam and catching it with a journal or two.
Still looking and thinking.