Rickenbacker truss rods, of the poorest design, often bend to the point that you can’t get a wrench on them. The way they operate causes a severe amount of pressure on the top of the little aluminum blocks you see in the first picture. This pressure causes them to lean forward, bending the rods to the point that the ends are buried in the wood of the neck. The fix is to remove the rods, cut back the tops so a larger block can be used in place of the little blocks, and then re-thread the ends of the rods. The new block rests solidly on the bottom of the cavity and will never tilt forward, allowing the truss rods to function correctly. Rickenbacker could solve this problem simply by using a commonly available double acting truss rod. I’m not holding my breath…
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