Wind cup wheel for Navico Corus masthead unit

[Ulrich G. Kliegis]

Hi all,
It seems that virtually no spare parts for the old Navico Corus
masthead unit, especially the wind cup wheel, are available. Does
anybody know about a source?

A few calls to local and regional dealers were disappointing.

Now, this thriggered the thought of producing and second-sourcing such
parts. Any service people here who could estimate the size of the
market for such a spare part?

Regards,
U.