I'm in Dwaynes camp on this one. I dont think anything Howards provided was at fault here. I think it was an unknowingly ( not criticizing you, just what it is) mismatch of parts and specs.The tool steel wasnt probably a good choice here, even though it " seemed" like better would be, well, better. You had several issues at play here, but I dont believe it was 1) oil, 2) the cams fault. I think the " fracturing" idea is dead nuts on.The wear doesnt look like the normal " wiped out cam" deal, which is usually way sooner as far as mileage goes.Regardless, its all mute now, as your not heading in that direction with the new stuff.best of luck on the new deal..onward and upward.