Measure the track
Hi Mike -Measure the width of the track (should be about 1" to 1 1/4") and the thickness (a little tougher to measure, but should be on the order of 1/8" to 3/16"). One suggestion is to call Garhauer Marine (website below at Related link) with the info and see what they recommend; ask for Guido. With the correct measurements, you should be able to find something that will fit from any of the major hardware players: Harken, Schaefer, Ronstan, Garhauer, etc. Hope this helps,Trevor