Odd Size Machine Head Bushing / Ferrule

[rmorris]

Hi. I am finally getting and old CMI EBO type bass making some noise again after some maintenance / changes.
I'm missing one machine head bushing / ferrule (missing when I got the bass years ago).
I've measured one of the others and the relevant dimensions are:

Tuning Post Diameter : 10mm
Bushing Inner Diameter :10.5mm
Bushing Outer Diameter (excluding knurled bit): 12.18mm
Bushing Outer Diameter (including knurled bit): 12.45mm

Bush Length : 9.17mm
Bushing Diameter across top (ie the bit you can see when fitted) : 16.03mm

Headstock thickness is approx 16mm so bushing length isn't critical and neither is the Diameter across the top.

It's a press fit type hence the 'knurled bit' - I can't recall a more technical term but I expect there is one :-) splines ?

So the thing is I can't find a replacement anywhere. Anyone have any ideas or (long shot !) something same / similar hanging around ?

I might be able to do something with 12mm metal tube with a 1mm wall thickness so 10mm inner diameter - would need to be taken out a touch - and building up the headstock hole a little with , say, 'Superglue' to get a good fit for the 12mm tube.
It's a lot of hassle for one bushing...

Thanks for reading.