Jr- I have a g19 Gen 4. I like the frame and the larger mag release, so that's the primary reason I bought it. I was looking to swap out the dual spring for a LWD tungsten GR and and ISMI spring, and get the NY1 trigger kit. Question: What weight spring should I use for it? I was looking to get the reliability of the g3's so I don't want anything too light. Also, is there anyway to fix the extraction issues with the G4s? I keep getting smacked in the face with the hot brass and it's starting to aggravate me. Is there other parts I could substitute in to fix this issue?