Simrad/Navico WP 100 Wheelpilot Parts

[ESampsel]

Hi,
Does anyone know where I can purchase spare parts for an old Navico WP 100 Autopilot? Specifically, the plastic drive rings (Items 1 and 2 in the attached photo. I have scoured the internet and can't seem to find them. I found the belt, but not the plastic rings. Any help would be appreciated!
Erik

 

[Scott T-Bird]

That has been so long out of production, I think you will only be lucky to find something on e-bay or craigslist.