Ah ha... that is the cam and that's the first I've seen of a recommended spring. The installed heights of my retainers are 0.045" too tall for these but a couple of shims should do the trick.
Your welcome. There's always a little variance on some of the heights anyway so you can shim them correctly and get a nice even pressure across the board. Good luck.
P.S. Just FYI, generally speaking, as long as the're the correct diameter you can use a spring with a little taller installed height rating but it raises the seat pressure some and lessens the distance to coil bind.
