There are quite a few components that make up the Control Assembly. When it comes to an overhaul of this vital area of the generator, it is unlikely you will require anything like the number of parts listed, but you may well need to replace the wear prone parts that rely on pivoting smoothly, like the needle bearings for example?
A close inspection will help you decide which parts require replacement and which can be re-used.
Related components you may wish to consider: