****, I have no secrets. There has never been a reason to change the cam. Pettis nailed it.
I did pull the top end apart, pull the intake, and inspect all the lifters tonight. I was about to lose the lifter on number 6 exhaust. The roller is sloppy but all the needles are in tact. Magically, it was one of the two lowest spring pressures. I dodged a bullet.