Nice Beretta. I carried a 96 D Brigadier my first five years on the job. Don’t know if you still have it (I see your post is 2 years old), but I can tell you that the DAO trigger slicks up nicely just via dry fire.
One thing to watch for, though; my old agency replaced quite a few 96s that went down to cracked frames. The aluminum frames would crack just ahead of the takedown lever. In my opinion, Beretta has the 96 undersprung, and the slides were battering the inside of the frames during recoil. I recommend the following, to enhance the service life of yours:
1. Steer clear of the higher velocity .40 loads (Federal 155 grain jhp were what was killing our service 96s. That stuff was significantly “snappier” than 180 grain loads).
2. Stock up on extra power recoil springs from Wolff, and change them every 1000 rounds.
3. I don’t know if you can get recoil buffers for the Centurion, I’ve only seen them for the standard 92/96. But if you can, I’d give them a try.
I wish my agency had allowed me to purchase mine when it was “retired”. I really liked it, irrespective of the durability concerns noted here.