Throttle bodies, when introduced proved to be a quantum leap of reliability, durability and performance when compared with carburettors. However, overhauling the throttle body assemblies is normal and necessary when a high mileage (kilometers covered).
Overhauling for reliability and aesthetics will be better served by replacing as many of the old, worn parts as possible - even new fasteners look better than the old dull or corroded items.
Other related parts listed below:
Please be aware that this component may have other applications within the Honda model range, so check the part-numbers you require are correct prior to ordering?