Wow chineseguy, that is a very good batch of cz 2. Mine, with 11 lbs recoil spring, 13 lbs hammer spring, dlask FP spring, I got 6.5lbs DA and 3.2 lbs SA. I tried to cut 3 coils previously from my hammer spring and became 6 lbs and 2.5 lbs SA but I am having light strike from Frank's Reload from waterloo, so i put it back to 13 lbs.