After reading a few posts here and on other boards about G26 factory recoil springs failing , I've decided(actually still on the fence) to get a Wolff non captive spring and guide. What is the factory recoil spring weight? I believe it's 18 lbs. but I want to be sure. Is the after market spring and rod a good way to go and was the factory spring and rod failures only a certain lot? Am I wasting my money($36) on this after market part? This is going to be my main defense gun and I don't want to have any failures.