No.
We've seen a lot of folks, recently, immediately modifying their guns before they're even broken in. A lot of these same folks sometimes have more break-in problems than those who leave them stock for a while. (Not always, but it happens.)
Shoot it for 500 - 1000 rounds before you do any changing, unless you immediately have some problems.
1) The 85 Combat is a well-refined CZ. (Not as well refined as a Champion or Standard IPSC, but pretty well done.)
2) Problems sometimes occur with slide stops -- maybe out of spec a little, such that the next round in the tube nudges the slide stop as it comes up. In that case, taking a little metal off the slide stop is the solution. You'll see marks on the slide stop if that's in order. (My 85 Combat, a few years back, had that problem almost from the first.)
3) Some CZs can use a stronger extractor spring.
Not everybody is happy with the factory sights.
You can replace the wood grips with soft rubber factory grips -- many of us feel they're far better than the Hogues.
Or you can get new wood grips from two makers who participate here: Hakan and Omega8Omega. Hakan has his own section, and Omega8Omega can be found in the the CZF Classified area, and elsewhere. Both do nice work.
That's about it.
The trigger "grind" you describe is rough metal-to-metal contact. It will improve greatly over the next several hundred rounds. You may still want to get a trigger job, later. But wait.
