Spinlock Deck Organizers

[Setitus]

Sailed three times now on our 1984, 44' Gozzard and blown out two of the, I assume, original sheaves on the deck organizer for the lines running back to the cockpit. One on the main outhaul and yesterday the main furling line. Thinking I want to replace them and looked at very pricy Harkin and 1/2 the Harkin price Spinlocks. Searched but find nothing on Spinlock deck organizers. Any thoughts on Spinlock? Is 3,600 lbs. rating enough?

[Stumble]

You probably just need to replace the sheaves not the entire thing. But since you have had two break already I would just replace them all. The housings generally will last forever.