DMZ85

My Shadow 2 is having hammer follow about once out of every 200 rounds fired. The hammer does not catch the sear and I have to do a double action pull to get the trigger to reset and fire the next shot. I have just installed a CGW sear, CZ Sport Hammer, CGW short reset disconnector. Trigger over-travel screw is adjusted correctly. I am leaning towards a tired sear spring but wanted to check if there is anything else that could be interfering with the sear catching the hammer. Thanks!

I loaded about 1000 rounds of 9mm too long for the PCC that they are intended for. Any thoughts running the rounds through my XL750 to decrease the overall length by around 1mm. They have been crimped by a Lee factory crimp die. Thanks.