Ok, I want to order the Wolff springs for my P11. What lb is the stock spring and what lb should I be ordering, assuming that the majority of my shooting with the P11 is 115gr ball and 124gr standard and +p rounds. Also, when I order this recoil spring from Wolff does it also come with a firing pin spring? I read the Wolff web site and Yzguy's and they are both a little confusing. (plus it's late and i'm tired!). Also, is the firing pin spring hard to install....thanks.