Roger - just swapped it out. The old one had been polished quite well. I do NOT take off all the finish. I use 600, 1000, 1500, 2000 sanding on a flat table to get it all flat and smooth. I did the same to the new one. There is ENOUGH improvement (not all the stacking is out) that it will function better.
Next thing I might do is call CZ USA and see if they'll send me a new hammer and strut. They replaced the hammer on my atrocious one, and this way they don't pay for shipping. I am getting REALLY GOOD at stripping it and putting it back together.
As with any P gun it feels a tad smoother in the left hand. The DA now is OK - not great - which is NOT that acceptable for ME. So now it has a new trigger bar, disco, lifter, roller, and TRS. It shoud be excellent, but is not. Of course 1000 rounds would help, but the gun already has about 800 through it.
The Omega's primary advantages are the SA is more crisp, and they are very easy to service, and parts are cheap.