my original clamps started to break after changing the head cushion.

So tried my luck with one from printables the original was pretty good only a bit to loose and I had trouble getting the cable behind the aluminium frame.

 I made the cable part a bit deeper there so the cable now goes a under clip in the part with the nuts..

made the model fit tighter around the adjustmentclip in the clamp so more sturdy now

and removed the extra cable hole so now you just need to mirror this file when making the other side .. looks a bit cleaner.