With it that far gone, didnt it show signs of issues long before this point???
Ive run old junkers for years that ticked, knocked and the worst lifter I ever saw was a pushed in bottom, thats ugly....
Good luck on the fix though
Its got to be bad parts these days, luck of the draw???
I say this simply because luckly ive not had this happpen ever, just a good stash of old stp and std breakin like we all do.
Im still trying to grasp the concept of metal on metal when most dont consider a cam a wear item.