http://www.cruisersforum.com/forums/...1&d=1148237656
If the above link works you can view and example of using polyester double-braid to "interface" between chain and three-strand nylon rode. The KONG S/S swivel was chosen to eliminate a shackle between the chain and anchor. That particular swivel can be removed and completely inspected. Most others cannot and, therefore, I cannot have confidence in what might have been going on with the innards.