Try rudy
If not, that is if it is like my 25, I think harken makes what is called a halyard retainer. It is a block that is on a mounting that mounts with 4 screws. West/Boat US should have them or be able to get them.I don't have Rudy's e-mail address but I am sure someone here is going to give it to your anyway.If you are talking about the plastic fitting with the hole in it that is held in by two screws, ( it prevents chaffing in the cockpit)check with the same sources mentioned above.r.w.landau