I just noticed that my 57 junior truss rod doesn't seem to have any more travel for the nut to adjust the neck? Does this mean I have to replace the rod? I saw where Dan Erlewine fixed this type of problem on an old acoustic with half moon washers. Has anyone here had similar problem and fixed it this way? Is this a permanent fix or is the truss rod shot. The guitar was refinned at some point, don't know if that would be a factor. Thanks.