I did find another set (4) locally (well if you call 5 hr round trip local) and delighted to prove you right.
Slipped one over the hub and fits like a glove.
The wheels I got are a bit rough, so will need a bit of work, but that's all more fun.
At least I can get decent rubber on there
Thanks for your great advice!
Awesome! I'm glad you got something to work with.