If you Google Stylus has separated from a Boron Cantilever, there are a variety of Cases to found with differing information.
A search for Cartridge Model may well show up added information, as I found on my owned C'b, I referred to previously.
There are also reports to be found on Broken Boron Cantilevers, but I don't see this being my case.
With the discovered information to evaluate.
I chose to use Macro Photography to capture images of the C'b Cantilever End to assess if it was a Loss of Adhesion or a Broken Boron Tip.
The witnessing that the Bevel End on the Boron Cantilever was almost a Perfect Flat Surface, I believed a Loss of Adhesion had been the cause of the detachment of the Stylus.
Note: The disturbing amount of contamination witnessed on the Cantilever and Housing, especially where the Cantilever Enters inside the Housing was surreal.
The Rebated Side Walls of the Housing, Cantilever and Bobbin ?
was covered in a excessive build up of granular particles.
I can only believe these will be effecting the freedom of movement, and a loss of performance will be the result.
As a result of this discovery, I am intending on doing the same inspection of my other rebuilt MC Cartridge.
It will soon have about 200 Hours usage, and if there is any contamination evidence, I will send it with the C'b for a Inspection and if required a Thorough Clean.
The Macro Images were forwarded to a Repair Service for a evaluation from a Technician.
The reports returned from all contacted has been very promising, and the offer of a repair was made.
One Service rejected the opportunity to carry out any work,
as their report, has been very clear about the added risks for the Rebuild, because of the compromised surface to adhere a Stylus onto.
An additional operation of a Cantilever Exchange on the
C'b Brand of Cartridge that I own, is imposing an increased risk to a successful operation.
As the internal Parts for this Brand are not off the shelf items.
After my reassurances offered to the Rebuild Service, we were able to maintain a communication on the possibility of a repair being undertaken by their service.
I can now get a repair done using various services and a variety of methods.
I wish to avoid the Bonding a 'New Stylus Only' onto the insitu Cantilever.
I am hoping to have a New Cantilever and Stylus with a improved method for the setting of the Stylus, as the C'b was left without a Stylus following approx 600 hours of usage.
In my mind, I had this as a 1200 Hour Cartridge if given the ideal working conditions, before a concern for the performance of the Stylus was to be questioned.
I hope the above helps with helping the OP to evaluate when making a decision on their present situation.