There was a little gap between the mounting point and the Original GPS Mount (KTM Part Nr. 63512992144); this allowed the mount to rock back and forth,
which slowly but steadily seemed to loosen the two bolts holding the mount.
The part bridges a distance of 1.75mm.
I recommend printing it from a soft material such as TPU or Flex filament.
I printed mine with solid infill; you can play with infill, walls and solid layers to give it more flex for dampening.
I included two versions, one as a closed loop and one that can be opened (e.g. if you already have the GPS wired and don't want to disconnect it).
Happy riding.
The author marked this model as their own original creation.