The method I was using finding icl at lifters peak lobe lift then backing off the lobe .050 both ways.
He showed me a different way with a different tool, it fit into the lifter bore.
Find base circle of the cam then go up to whatever lift you want, pick a number and then find that number on the other side of the lobe & that's how we did it today.
Maybe @Newbomb Turk can explain it better.
It was a little more confusing to me but it took out the guess work of the 10 degrees on top of the lobe where the dial indicator didn't move.