6 coils cut off? My god- I cut off 2 coils from my 13# spring, use an extended firing pin, and I still get the occasional light strike. Not a problem for me- I don't do IPSC, just slow fire target shooting.
Fwiw, my DA is 5.25#, and SA is 2.75#. I can't imagine what yours must be like- isn't the trigger spongy? What are your pull weights like?
Trigger is not spongy, you can feel a little SA creep, double action feels like a toy and is very smooth. I have not measured as it is my PPC gun. All ammo is hand primed to insure the primers are fully seated. I took another spring and cut it even further and used the lighter firing pin spring but it made the single action dangerous and I experienced the firing pin hanging up and bouncing so I took the lighter spring out and went back to 13lb less 6 coils. I have never had a round not go off but I am sure this is do to hand priming.