I installed a trigger spring kit in a Sccy cpx-4 and have been getting light primer strikes ever since. The minimum light strike rate is 2 out of 10. When I retry them they fire just fine in my Ruger or my Glock. I will have to reinstall the original springs or trash the gun. I will not trade or sell it. It certainly can't be relied on to protect your life. I haven't contacted them but I pretty much know what would come of that - I did it wrong. I am not a gunsmith but have been shooting and working on firearms all my life and I am 80 years old now. I find that at this age people are more than happy to tell you how dumb you are.