The Service under scrutiny is difficult to find anything concerning about whenit comes to the Coil Repairs and Cantilever and Styli replacements where a Solid Cantilever is used.
The repair that I have been informed about recently in a private conversation and the one that I am aware has caused contention from another Third Party Build Service, is the Brass Splint Insert, using an Armatures Projection Tube as a Sleeve and a Hollow Cantilever as the other Sleeve.
Images seen may/may not tell the true story as the images shown are specifically isolated to Aluminium Tube Cantilever. Which in my view is not the most common of requests for a Cantilever.
Brass as a repair on a Metal Cantilever formed as a Tube is not alien, the Bristle from a Brass Bristle Brush has been advice found during Web Searches.
A Brass Brush Bristle does not cause myself any concern, an individual thats to do a home botch of a repair, they get extended experiences of creating music on the cheap, what not to like.
Where the line is crossed, is when a Professional Service, is offering such a method and charging for it. The adding of the Brass Material to the critical part to transfer Styli energy, is to really interfere with the science tht is underlying in the design for the Phono Cartridge.
The inclusion of Brass is going to introduce unaccounted for mass, as well as all new parameters frequencies very well known from solely using Aluminium.
Ultimately the energy being transferred, prior to getting to the Coil and converted to a Electrical Signal is substantially Adulterated. The generated electrical signal will be far far from the Truest of Signal to be sent for further stages of amplification.
The Question is does a Cart' with a Cantilever Spliced with a Brass Insert, qualify to be referred to as a equivalent, in relation to what was present prior to the Professional Service Modification being carried out.
If equivalent is the end product as a result of the Professional Service Modification, , then in Marketing Spiel, the Product produced is acceptable as a design, even though far from ideal when assessed from other perspectives.
Caveat Emptor is ones friend in many things Audio.
I wonder if any Customer ever inquired what was they to receive as a returned Cartridge, not limited only to the Styli Form that was to be used.
I would not hesitate to have the Service being discussed here, thoroughly clean a Cart' fix a damaged coil, supply a New Cantilever or Styli Form. I follow there work, know the quality produced in comparison to other work followed.
I would not be asking any service to use a Brass Insert, no matter how much I valued the hollow cantilever and wanted to maintain it s usage, or would I like a Service to use a Brass Insert on a Hollow Cantilever of any type or with sentiment attached.