Rear wire wheels are shimmed out unnecessarily...
My rear wire wheels, like many Auroras, place the tires
considerably outside the fender. Not a good look. I tried pulling out
the aluminum shim, but closer examination reveals the raised ledge on
the hub prevents the knock-off adapter from seating face to face. Solution:
A bit of careful lathe work, cutting a recess in the hub (red line),
and you can throw the shim out, bringing your wheel inboard 5/16".
NOTE - It is necesesary to machine to a close tolerance, as these surfaces
are responsible for centering the wheel.