Martin, I've contacted the member who makes these and told him about your request. If you don't hear back, it'll simply be that he no longer has them or makes them or too busy on other projects. In that case, you're going to be looking for a used one.
Unfortunately there's probably more carbies around than needles. One's easier to lose than the other.
Sydney, Australia. The new leaner, trimmer shed: RE5M, RE5A, GSX1100EX, GL1800/Champion sidecar
I have both re probuction needle and the single direction spray jet that it fits In.( this Jet has no part number left lested as it is a “Factory fit “ part and DOSE NOT Unscrew like the other jets )! I have both items listed on Ebay Sorry I cant add link via my photo to this site. Message me if you can’t find it BEST Roger
Now Bikes RE 5 M,(UK )Blue 1974 RE 5 M (UK) X 6 H/D XR1200 X1 Sports RE 5 A (UK) Black 1976 Norton Rotary Classic 1988, Norton IP2 1986