Phono48 wrote:The large ring (3) is a press fit into the base, and will come out with some persuasion. You'll then find that there is another ring soldered to the base of the arm. That ring is held captive between the top of the base and the large ring. No bearings. The ring that is soldered to the base of the arm will have worn away, resulting in the sloppiness you are seeing. There is no easy fix, and as you also have a problem with the crook joint in the arm, I think your only recourse is to get hold of a complete replacement arm. It's a very common design, so it shouldn't be a long job. Just make sure the replacement arm has the same measurements as the original.
Thank you very much for the information.
How would you go about removing the 'press fit base' (3) I wonder ?