Niederlander

The "Extractor" in i892 rifles is a rather large and long spring.  In many '92s, especially Rossi, it is about 3 times as heavy as it needs to be and puts a "hitch" in the closing of the Breach Block (Bolt).  Deciding whether to reduce it is another of the reasons I suggest you source Nate Kiowa Jones instructional video on tuning the 1872 Rifle.

Wow! I don't normally like gold plated guns but these are done exactly like the presentation guns of the 1800's and the quality is as good as the originals.

As soon as I get it I plan to see how it functions, and of course I'll compare it to my original Winchester 92.  Out of curiosity, what is wrong with the extractors that needs work?

Here's something to consider. I have an older .44-40 Rossi M92. I did a bunch of work on it and it was much smoother and easier to use. A couple of years ago, my brother ordered one in .357 Mag. I had him bring it over so that I could work on his too. Frankly, though, we didn't feel that his needed anything beyond just shooting and levering it. His carbine was much smoother and lighter to operate than mine had been. He didn't care about the external safety or the follower so we left his gun alone. Note that neither of us compete, but we do appreciate good functioning guns. It's possible that my brother's gun was just an exception, but you may consider using your new rifle for a little while before deciding where to focus your efforts for improvement. 

Griff

R&R The Ejector spring, re-work the extractor, R&R the lever latch spring, R&R the Trigger Spring.

Contact Nate Kiowa Jones (Steve Young) at 'stevezguns' and BUY his DVD and his parts kit for the 92.  You will be intensely glad you made the purchase.  You will be amazed at just how fast and slick a '92 can be made to run.  Steve also sells a neat little 'plug' to replace that stupid safety thingie.

If your not going to run the gun for CAS, the Main Spring is strictly your call.

I add a bit of beef base to the afore- mentioned recipe. 

Thank you gentlemen. More data points are a good thing.

Hello, Fazer:
I agree with DJ.
I sent you a PM. Smiles.
El Supremo/ Kevin Tinny

The four knife-blade-with-a-hole-in-one-end pieces are Spencer extractors. 
The four largest pieces with notch in them are Spencer firing pins. 
The four pieces with peg in one end and hole in the other are Spencer magazine detent springs. 
The four tombstones with holes in them are Spencer magazine catches. 
The two paisley-shaped pieces are stirrups and could be Spencers, although it depends on the size.
The two T-shaped pieces look familiar, but can't place them.
Also not sure about the four little "chips"

My 25 year old 1873 SpaghettiChester (Uberti) has a .429 groove diameter. I am sure I checked the twist rate BUT that was two decades ago. I can tell you that it is accurate out to 200 meters with 240 - 250 grain bullets and Reloder 7.