you have to make sure it is just carb work. there may be a lot wrong with a non-running bike.
anyway, there is a guy called steve who does carb work. he is well known in the concours world. many have had c10 carbs worked on by him. you can contact him. his fees are on his site
https://sites.google.com/site/shoodabenengineering/intake-and-exhaust