Looks like bad news, as Superia X-Tra 800 is the better film compared to Ultramax 800 from Kodak (which is not bad, but simply not as good as X-Tra 800).
Here's the loaded cartridge I pulled from one of the cameras.
View attachment 283086
View attachment 283087
That is definitely Kodak. You can clearly identify it by the huge amount of all the black dust particles which are spread all over the film cassette. It is typical for all 35mm Kodak films.
And if you look inside the cassette, you will find these particles there, too.
These dust particles are from the velvet from the slit. Kodak is using an inferior material compared to all other manufacturers. Therefore you don't have this dust problem with 35mm films from Fujifilm, Ilford, Adox, Foma.
My local lab - Kodak customer for over 70 years - is permanently complaining about it: The velvet is crumbling and spreading the particles all over in the lab. Much more lab and machine cleaning is necessary because of that.
To avoid having all this dust in my 35mm cameras (and facing possible shutter failure because of accumulated dust in the long run) for years now I am cleaning all my 35mm Kodak film cassettes before I load them into the camera. A bit nerve-wrecking of course, but much much better than any camera damage which could occur of that in the future.
By the way, of course I also contacted my national Kodak office and reported that. They confirmed the problem. That was some years ago. But nothing has changed since then.