Hello Graham
I had my supa 5 for 25 years and it ended up with some play with the swinging arm bearings area. It is a very involved job replacing the rubber bushes that requires a press to push in the new rubber bushes as well as the sleeves. I did not have the facilities to do the job so what I did was to cut out some 1 MM thick u shaped shims and pushed them down the sides of the rubber bushes. This took out the play. Once they were worn out I just removed them and replaced them with more shims.
Dave Gillespie