Vital silence has a good point, however, I will just add one thing. Fiddling with your springs and experimenting is all good as long as you have something else to shoot on Sunday. Someone who comes in here with zero idea of what do do or how to start with something as simple as a spring kit needs to read a bit and play a bit before they rip their only gun apart.
I certainly don't mean to be discouraging but I am eminently familiar with the large amount of time and trial and error involved in learning how to tech and tune a WGP valve train.
...'cause bandaid's stuck on me!