The cams that are going south long after breaking are ones that have been run with regular crap oil , from what I've read. And the others that go south upon break in are typically because of spring setup issue or shity cores. I use Schaeffer's Supreme 7000 Oil in every engine I built and broke in.
One time I used Castrol or Valvoline and put a bottle of STP in it and the number seven lobe showed porosity...so I pulled it. Regrind it was given..
