Thanks for the comments Brion. I would definitely call it a stout block; a 6 inch aluminum sheave between to large stainless plates and two 1/2 in. clevis pins. As we are considering what to do about this piece of the backstay, we had another thought: what about using amsteel (or similar) line ? We happen to have some 3/8 amsteel (that we are using for running backs) and tried it out in the block. It runs through it smoothly(doesn't seem to slip) and fits in the sheave nicely. I seem to recall hearing (not sure where) that amsteel would require a different type of sheave. Could it work with the sheave we have? If not, does anyone know what type of sheave is required? Thanks again for any input.
Catherine
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