Ann,
Have you tried http://www.vintagetrailersupply.com/ ? The have several of
the hard to find parts and are great folks to deal with.
Atb,
Royce
> I have maybe 2 of the original metal ones and then 3 that are a white
> plastic or nylon--that's why I thought there might be a replacement part.
>
> I'll keep looking. Thanks!
>
> Ann