Pieces of steel in cylinder??

FWIW on the cam bearing damage: The OP reports that the bad cam bearing wear shown is on #'s 2, 3, and 4, and was much less on 1 and 5. Know that the average valvetrain load bearing on cam journalss 2, 3, and 4, is twice as much as on the #1 and 5 cam journals. So it seems very, very likely that this cam bearing issue came from something jamming in the valvetrain. I personally suspect this drove crap down into the crank. I am not sure how the fishing gear parts got in there LOL