Just installed the "Old Style" combat trigger and reduced trigger spring, which along with the other CGW upgrades I've made, have brought the DA trigger weight down to 7 lbs. and SA is at 3-1/2 lbs. Less take up and a cleaner break as well. This trigger is feeling great now.
Other changes I made previous to this:
CGW 3-piece spring kit w/ #13 hammer spring( SPGK1)
Stainless guide rod (CZ Custom)
#14 lb Recoil Spring (CZ Custom)
Pretty minimal expense and a little time and this gun has been taken to a new level.