Which part does the "wearing"?

Seems like a good thing to think about. Maybe pull the lifters and inspect them and look at the lobes. Agreed on the fast ramp.... I think they are a good idea, but shied away from them on our latest build for my son's 340; he is less inclined to inspect things (Actually I was just the same at his age....let's just run it!) and he is not as philosophical about things failing and needing a rebuild.