Wolf spring kit will change all that, and not very expensive. Just changed a spring today, 13 pound double went to about 7 to 7 1/4 and the single is a smooth 2 3/4, wow. Kit is only about $ 15. Watch Jerry Miculeck (sp?) Youtube on how to change the two springs, was about as simple as he makes it out to be and a fun thing to do with the gun.