340 xhead spring shimming, height and pocket question(s)

Thanks, I wanted to ask him about coil bind, but when he read the 942's werent recommended I was basically rushed off the phone lol. I even mentioned install height and was basically cut off.
I think my coil bind is good. I'll chk my calcs on it. Spec is 1.125".
The 340HP springs are a short-wire higher spring rate spring that only puts about 70# on the seat, shimming them is crucial to make sure it is at least that, if the old cam was well within' it's lift wheelhouse it was an "insurance" move.