Kevin, thanks for the post and sharing the ugly truth, sorry your cam got wiped out.

I believe the Detriot service manual states the first valve adjustment should be done at 60K, mine is about at that mileage, so the time has come, it looks like a pain to do in an XL. Most Diesel mechanics I've talked to say the valve train in a Series 60 should be maintained every 100k.

I have seen cams go flat in new engines that were still on a dyno, it can happen in a hurry.