One correction. The wire had a z shape not a u shape. One end inserted into the front of the rudder, the other inserted into the sullivan assembly which was by a forward bend in the wire. This wire was thin enough to do the job and flexible enough to not place a great deal of strain on the rudder. The wire was one I bought to use in hinges. I don't think I stated the correct diameter. I do know it was a little thicker than the Sullivan spring wire as I had to drill a larger hole in the tail wheel bracket to insert the wire.
Sam