Muting Ball Keeps Falling Off

After greasing the gears I was playing some discs when a reoccurring problem happened;  while adjusting my volume, the mute ball fell off and the cable pulled up into the spring sleeving.  

To fix the problem I went to Home Depot and bought a 1/16" ferrule.  THE FERRULE NEEDS TO BE INSTALLED WITH THE CABLE IN THE PLAYER, in the approximate location shown.  Once on the cable it needs to be squeezed tight with a pliers or clamp.

 Ferrule installed behind mute ball.

Note that this repair is not the original design.  With the ferrule installed, if you need to remove the motor, you will need to unscrew the mute ball's operating lever from the underside of the motor plate.