Thanks for the information , and "No" I'm not playing my best records on it yet, I have my Plus-o-Gram for that.
Are the symptoms of a knackered crystal cartridge lack of output? If so, that seems to be my problem. I assume that replacements are no longer available so I will resign myself to just using the radio and leave it original.
It only cost me £5 at the last Radiophile auction and has given a lot of pleasure already in refurbishing it, it just seems unfortunate that I can't complete the job.