Who made the spar?
The spar manufacturer ought to have replacements. I doubt that Catalina Direct would have them. As one responder has said, you can also fabricate your own locally.My C320 mast was made by Charleston Spars & has a similar mast gate fastened with two knurled knob screws. The metal mast gate has a slight curve that follows the mast curvature, and a small 90 deg inward lip where it joins the track for the sail slugs.Experience suggests this arrangement, while cheap & simple, isn't very good. The adjustment of the mast gate is very sensitive if you want to get smooth movement of the slugs when hoisting the main. And, those screws tend to work loose over time.Anyone come up with a better solution?--Rons/v Lady Jane