' Equivalent ' is the Key Word.
The 'Retip' Service with Adept Technicians to support the work undertaken, has full confidence in their capability of offering a service, as to whether their supply of a Styli and then attaching it to a Cantilever is carried out and completed in a manner that is equivalent to any other Service be it competitor 'retip' service or a Phono Cartridge Manufacturer.
With this confidence in abundance from certain third party 'retip' services, the Manufacturer is not required to the task, the choices made for who does the 'retip' belongs to the Cart' owner, and them only.
Obviously there will be those that are willing to express their firmly held opinions on such practices, and challenge the choices made by others when their choice is not aligned.