I just don't like excessive valve pressures ,on flat tappets on break in,Greg...It's not a roller,so you have to be touchy on non roller cam ,break in Greg.... If you still have that narrow lobe center cam,from White Punk,look at the valve spring pressures,they recommend....Pull the inside spring out,on 130 on the seat,or buy those pricey "break in reduced rocker ratio " rockers....I won't gamble on flat tappet break in,with higher pressures....(Ask me,how I know...)