Older caburettors are problematical, various wear prone components will require replacement, external components may require replacement due to cosmetic damage, corrosion etc.
Unless you are lucky enough to drop on a new NOS set of carbs, then refurbishment is the only alternative. However, getting the bodies professionally vapor blasted, and the internal components sonically cleaned, and replacement of worn jets, adjustment screws and weak tension springs can bring an old set of carbs back to perfect function and aesthetic originality.
A number of external carb components listed below that you may find your self needing:
Add as many new parts to the same shopping cart as you wish, new chamber packing 16075371004 tube clips 9500202100 9500201120 9500202070 for example, and still only pay the same single fixed price shipping cost. Please be aware that this component may have other applications within the Honda model range, so check the part-numbers you order are correct for your model and application. Pro workshop gasket sealant 08CRAHLG120G - easy to apply with professional results.