I did my axis trigger also. I removed the old spring, ran a 10/24 tap thru the threads to clean them up. Screwed in a 10/24 screw, either 5/8 or 3/4 long, can't remember which, from bottom to the top. The screw just stuck thru the trigger assy about 1/4 inch. Then for the spring, a spring from a Pilot G2 gel ink pen works perfectly. I tested the trigger pull by using a milk jug, and a long string. I placed the rifle butt on the counter, (empty of course), and had my wife hold it upright. Then I ran the string thru the trigger and milk jug. Then I added water in the jug until the trigger tripped. Weighed the jug on a digital bathroom scale. Before, the trigger pull was 7.64 lbs, but after the mod, it was 2.42 lbs. I did the jarring test, opened and closed the bolt, switched the safety on and off rapidly. Never had an accidental trigger trip. Next, to correct the trigger side to side play, I used a brass washer, the right size for the cross pin, and sanded the thickness to fit.
