Has anyone found a good source for higher-power springs for the Axis yet? I built a 5.45x39 last year, and it light-strikes consistently on hard milsurp primers, and about 1 out of 10 on commercial 5.45 ammo. I've checked headspace and firing pin protrusion, those are good, so all that leaves me with is a weak spring, unless someone has other suggestions...

Anyone?