Steve-He found an old Mawer wheel at the Windleburn's workshop

Mawer wheels were off Bunces Monaro from 1975- he got them from Aus himself.
Check the pix of the Monaro at the time.
And thats why they were sitting at Wendleburns workshop....just like the original wheel from the Monaro when Jim Carlyle had it.
NZ is a small close knit country - easy to find and trace things.

J