I would try going to your local chandelery (I know, a disappearing dinosaur) with one of the old ones and just trying to match them up. You might find something that works. Or, you might go the route this poster suggested:
" The springs on the Arco 6 were mangled and wouldn't stay on the pawls. These springs and pawls were not designed well, with little loops of spring that go over the ends of the pawls to hold them in place but pop out easily. I couldn't find replacement springs of the same design. However, the pawls of the Arco 6 can be replaced with Lewmar small winch pawls. The Lewmar pawls are a little shorter, but work just fine. The springs mount in the middle rather than the ends. Unfortunately, the kit comes with six pawls, so it will take two kits to service both winches, leaving four extra pawls. After replacing the pawls with the new pawls, the springs can be serviced in the future for almost nothing (I found one place that sells them for 15 cents each), and extra springs come with the Lewmar pawls"
I think Cataina Direct also suggests this as an option
