Horrex window shades

We have a 2022 T@B 400 with Horrex bottom up/top down shades and I lost one of the window shade cord retainers (small metal part with a hole and Allen screw tensioner) on the front window shade.  Does anyone know if there is a dealer or parts supplier in the US that sells these?  I checked with Horrex and the three distributors they list are all in Europe.  I reached out to one and they won't ship to the US.

Thanks for any suggestions.