Valve springs for .528 MP cam
I like the 924's in around 124-126# Seat Pressure,
however,
that is WITH the Inners installed,
because,
as always, the Cam break-in must be run in with the inners REMOVED and a good Zinc additive in the Oil.
Install the inner springs AFTER the Cam break-in, for the 124-126# seat pressure.