Finally have a little free time to get this finished. Here is an area of major importance, the sear and hammer. Note in the first pic a stock CZ sear. I have seen these vary from not to good, to a miniature wash board.
Next pic is the hammer area that rubs against the underside of the sear. If the hammer is rough (and it is most of the time) combined with a "wash board" sear, means a really gritty feel when cocking the hammer.
Last pic is the sear underside after polishing along with the hammer contact area. Done right, you now have a butter smooth cocking feel. Next post will deal with the firing pin lifter arm, firing pin block plunger, and the hammer strut. All CZ's that come to my shop for action work have this performed. The difference, before and after, is dramatic.