Coilover Help - Snapped Allen Key Ball

  1. My model of MX-5 is: NC1, 2.0l sport
  2. I’m based near: Chesterfield
  3. I’m looking for technical help or recommendations on: snapped off allen key ball.

Hi Folks, has anyone broken the ball off an allen key in a shaft on top of the coilovers? Need to get the ball out, so the damping adjuster can go back in to change soft to hard etc? Tried medium magnet, super glue, drilling but allen key too hard, turned upside down and banged shock etc.
Any ideas or experience welcome.
Thank you Kevin.