Glad to help...

Given the vintage you may be suffering from covid shortages that just never got restocked

It looks like many or most of the 30 Gold and Judy Gold parts should go on it. The internals look very similar. But the caps are different, and the caps sit down in the crown forging on yours so that might be important. The Psylo is much different

Studying the spare parts catalog is a gold mine for this kind of thing but you need to go back a few years to get all the possibilities. And it gives you false hope that just because it has a part number it might be available - it often isn't. It also shows you where the line is between the top half and the bottom half of the lineup. A Sid or a Pike has most of its parts available and you can upgrade it. A Gold is basically a dead end for upgrades and repairs