You can see something queered up already pr. The left spring is binding. After the outside is spotless, do one carb at a time so you don't mix up parts. You can check this place out for parts if you wish. www.z1enterprises.com/
I think the point behind that is so you don't make things more complicated than they need to be. If you really decide to tear down a whole set of carbs completely you will find yourself with a mess of parts. Perhaps having one to look at as a reference will also help.
It doesn't really matter if you swap MOST parts from carb to carb except for a few... Take the slides for instance. Over time, wear occurs between the slide and carb body. They travel in the carb body much easier if you put them back where they go. It would be tough to make a list of the FEW things that really need to go back where they came from so it is just easier to state that you should put all parts back where they came from. Generally speaking the parts that work best returned to their original location are those that move and wear against another part, like the slides.
wiredgeorge Motorcycle Carburetors
Mico TX www.wgcarbs.com
Too many bikes to list!