Wiley Clapp Gp100 Spring Rates

I have a 80's GP100 and a Wiley Clapp Gp and the triggers on them are very different. The Wiley being far better and lighter. The older GP breaks nice and crisp, but its heavy. My trigger pull gauge is gone sideways, so I can't compare them that way at all. Anyone know the spring rates in the Wiley Claps in order to replicate in the older GP?

Thanks