Lost Bush from cooker side glass hinge

Not sure how when it happened but I have found that one of the bushes on the hinges of the side glass panel of my Spinflo cooker is missing. Auto-Sleepers Spares have suggested I contact the Cooker supplier which I find a little strange as I suspect it is an Auto-Sleeper fitment and that the side glass panel is not part of the cooker. I've searched through Thetford spare parts without success from various suppliers.
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It would appear to be just a standard hinge for glass. Any thoughts where to find a replacement?

Do you know anyone with a 3D printer?

It's definitely an AS addition. When I bought my Sussex the splashguard was missing altogether. My dealer had tried to get one for me and received just the glass without the hinges/pivots so I rang myself and got the complete thing, the last one in stock, so I have a spare screen but no hinges unfortunately.

Try here, might be suitable size for adaptation?

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