We see over .040" of lost lift at the valve from deflection even with a 60MM cam, individual steel rockers and single shafts(two bolts per rocker three per stand) with as big a pushrod as we can squeeze in it on the SBC in the Vette. Point is deflection is always there and the bigger core helps. Be great if we could get a 9 cam bearing block that also helps a ton. But only going to find that in a couple applications. We have planned to go to a clamshell bearing so we can go to a bigger lobe to gain the lift we think we need to compete in NA10.5 given the deflection losses we see. We simply cannot put a bigger lobe on the cam now and clear the 60MM bearing..Point is deflection is a real thing, the bigger the stick the ore of it you will encounter.