I was going to comment and say that I must be doing something wrong. I shoot CZ’s often and have never experienced this trigger bite thing.
I've had a bunch of CZs over the years (ranging from several pre-B 75s, to several Compacts, a bunch of 75s (in 9 and .40), a 75B SA in 9mm, a CZ-40B, a CZ-97B,
and a number of 85 Combats. I still have an 85 Combat and a P-07, and I have never experienced trigger slap/bite with any of those guns. That said, I heard about it quite a bit when I was a moderator for a few years on the CZ forum.
wvsig's [post #2] recounting what he had heard earlier as to the likely source of the trigger bite problem, maybe related to the firing pin safety design, is the first explanation that I've seen that seems to make sense, and I've been asking for an explanation for years -- with no feedback.
I had no experience with trigger bite until I picked up a used P10C -- and it had it bad. Painfully bad. And it seems as though might possibly still be firing pin safety-related. I replaced the P10c's trigger system with one from HB Industries, and that has removed about 95% of the bite/slap. It's still there, but no longer painful. (It's a nice shooting gun.)
Smoothing the sharp edges of the trigger, something I did years ago with my 85 Combat, makes for a more pleasant trigger, but I suspect it will have only modest effect on trigger bite.
You and I were lucky -- and we weren't doing anything different than anyone else. Some of the guns were different.