And I certainly hope CZ has addressed the issue of the very soft steel under the case hardening like the originals back in the 80s.
First I've heard of this! I've owned a dozen Model 15-2's and never seen anything like this, even on a friend's later guns that had other issues. My problems consisted of a broken hand spring, and a broken trigger spring on a gun I bought that was well used, to put it mildly.