Never mind that - The most detailed pictures all are under 2 MB, which means I ought to be able to upload them. Right?
The first image is of the good button. The foam pad sits where it should and has a marked depression where it presses the microswitch. The pictures are deliberately overexposed by a stop or so, to make the detail in the black parts come out better.
The second image is of the bad button. It is obvious that the pad has "fallen down" from its position.
The third image is of just the shoulder button, as it was.
The fourth is after I put the pad in position. It is also obvious that this one has never been pressed in the right place, if you compare to image 1
It is also quite obvious, to me, how this happens. The foam pad and the microswitch is quite close, physically. When putting the bottom piece back together with the rest of the pandora, one needs to apply a little bit of pressure to get everything to fit in place. If, at that moment, you happen to press in the shoulder button, the microswitch itself will push the pad away. If you look at the microswitches, closest to the camera here, it is quite easy to imagine them "peeling off" the pad from a shoulder button that gets too close.
This came out as quite a lecture, ne? Complete with pedagogical images...Well, that was tonights lesson, girls and boys!
Well it seems that those pads are easily misaligned while transportation.
May I suggest using double face tape to secure them in place.
No, I don't think they are misaligned in transportation. I think they get pushed out of alignment when the case is put together, and that somehow the shoulder button gets missed in testing.
Addendum If it is not clear to everyone - The foam pads are sticky on the back, so they are already fixed by "sticky tape"