Mainsail slider

[Olmate-sail156]

Hi all,
I've had a mainsail slider/slug wear through/break. How do I replace it? Where do you get it?
Also- is anybody doing the Investigator Yacht Association regatta on Pittwater at the end of February. I intend to.
I may also be intending to sell my excellent example of an Investigator shortly. Will keep you posted on that.
Best, Graeme.

[Yara50]

Graeme
I think they are a simple catalogue item from Whitworths or similar.