[Leo.G (Leo)]

Sorry Peter for my lousy answer but I don't have the EAF, nor am I familiar with it, were I to have the stuff sitting in front of me I'd have a solution in minutes.
If that's a plastic adapter be gentle if you do use rivnuts.
If I had the exact size I could probably turn up some spacers out of some scrap round bar, steel, brass or aluminium if I have it (I may, I don''t know with the brass and alloy, I could have it) which would fit precisely and have the right hole for the mounting bolt.
That would only be OD, ID and thickness, it's a simple job on the lathe even for an idiot like me and I could chuck them in the post, you're not that far from me (but Auspost would have to send it via Sydney and Queensland first). They wouldn't be anodised or look like anything Joshua Bunn does but I am close and could get them there reasonably fast if you haven't found something yet.
Or you could pick them up if you were heading via Lithgow to the city sometime.