408 cam help

Was it the Comp cam that was going flat??..

Yes it was. The motor had to come out for an unrelated issue, as I was taking the motor apart I looked at the cam and some of the lobes had some really weird wear on them, the nose on 2 of the lobes was showing noticeable wear, and measuring confirmed this. The engine had about 3k miles on it, that cam wasn't going back in so put in the lunati solid roller. I correctly broke in the cam and used a zinc additive in the oil, but I was lucky that it didn't go completely flat.