To bring my original question kicking and screaming back to the fore.
Thanks for all the comments and pics, also to John S and Brian C for direct contacts.
As normal for Vin owners I took in all the info and then went and did my own thing! I used an A61AS for the right side reserve tap and A77AS with an extra pipe silver soldered in, both attached to the taps with A22s (thanks Brian). I think it's worked out quite well.
Thanks for all the comments and pics, also to John S and Brian C for direct contacts.
As normal for Vin owners I took in all the info and then went and did my own thing! I used an A61AS for the right side reserve tap and A77AS with an extra pipe silver soldered in, both attached to the taps with A22s (thanks Brian). I think it's worked out quite well.