The first thing I do when I get home with an Omega CZ is take it out of the box.
The second thing I do is install the safeties.
Only one (a P09, but I don't remember if it was the 9MM or the .40 S&W) had very, very, very stiff movement. I used my right thumb till it got tired/sore and then my left thumb till it got tired/sore and then used one of my trigger fingers to work it till it got as smooth/easy as the P07.
Like dry firing a few hundred times. Works off the rough spots and makes things more easier/smoother.
I "grew up" shooting/carrying a 1911 so the cocked and locked variation of the CZ's was natural.