Missing piece, not sure what it actually is

Alright so I have been working on this 82’ KZ750E with four cylinders, it was having a hanging idle problem which I made a topic for, but I think I just found the problem, but another problem came up because I’m not sure what it’s called, so I had to buy a new carburetor body and I took the pieces from the old body and put them into this one. The problem is I forgot a piece and now the old body is thrown away, I’m not sure how I missed it but I need some help figuring out what it’s called so I can get another one, I’ll attach a picture.

I believe what you are missing is the primary main jet. Are you absolutely sure that the parts from the donor body are exactly the same as what you need? Each of those jets come in a variety of sizes., as do the needle valves and the needle jets. Each one has an identifying number stamped into it.
Here is a parts diagram with part numbers....
www.partzilla.com/catalog/kawasaki/motor...ts-81-82-kz750-e2-e3

No eBay APP ID and/or Cert ID defined in Kunena configurationHere is a link to the factory manual for your bike. If you look at diagram E17 it shows that you are missing the bleed pipe (in addition to the primary and secondary main jets)

BTW, the manual calls the missing part a bleed pipe but the parts fishe calls it a main nozzle.

www.750turbo.com/manuals/GPz750_Base%20Manual.pdf

This is what the part looks like. Pretty sure I've got a spare if you can't find one otherwise.

Alright guys sweet thank you a ton, don’t know how I missed it when putting the carb together but I found the part and it’s on it’s way! Thanks a ton!