Most people do not part out a set of complete carbs. Then the carb set is of no use to most.
Also if you sell a part off of the set you are left with a incomplete set of carbs. almost no one wants a set of carbs missing a critical expensive part.
Besides that the accelerator pump bottom cover check ball would have to be tested with fuel in it to know if it is any good. Many of them are not working after 33 years.
If I had a bike like that I would sell it as is- all together. It is worth much more.
Some people think that if they sell all the parts they will get more money.
They usually cannot sell many of the parts, and it could take many years and
you would still have left over parts.
On a Roadstar Adventure.