CREATOR CJ-120 GETTING OLD?

Hi EDM people. I have a 1996 Creator CJ-120 vertical eroder (small 16amp model).

I would really appreciate any thoughts/suggestions on the questions below. First some background:

The machine is perfect for my small workshop as is only used a few times a year for my toolmaking/moldmaking business. I bought it 2nd hand a few years ago - it has done a fair milage - It is a little worn in the slideways. But still going fine.

Although not often used a reliable eroder is critical to my business. I worry that it will 'die' one day on a critical urgent job. Being a one man band I cannot justify an expensive replacement - but want to avoid a costly breakdown. I operate in 'remote' New zealand where machines and repair is expensive.

I have tried to source spare boards from the manufacturer but they said they hold no spares as the machine is now out of production.

How long is the machine likely to last?

Should I remove and or clean the boards?

How should I best fault find if the machine breaks down?

Are there any key parts I should obtain?

Should I sell it now while it is going and purchase a more current replacement?

Many thanks for any input in advance!