I Finally opted for gluing them with superglue.
Can you make a video, showing how you're doing it?
Superglue works, but it is either permanent or it reacts adversely with fake PU "pleather" and makes its own mess. I have used double-sided tape which does not react and can be removed later, if necessary.
The trick to installing pads is they stretch far more than expected without tearing or deforming beyond their elastic limits. Trust the engineers they can stretch over the earphone receiver and resume their original shape later. This requires real faith, but is the key to success.
Step 1) Slip one end of the pad over one end of the earphone receiver and go as far as you can, holding it in place with the thumb and first finger of one hand, as shown in the photo.
Step 2) Slip the first finger of your other hand INSIDE the doughnut where you ear goes, press and S_T_R_E_T_C_H it by pushing INSIDE the pad toward the uncovered end until the retaining ring slips over the edge of the receiver shell. Alternatively, grab the seam on the pad (circled area in photo) with thumb and first finger and pull hard until the retaining ring clears the receiver shell. This requires some nerve, because we do not want to damage the pad. But, it works and the pad will soon regain its original shape.
Step 3) Pour two fingers of your best Bourbon and enjoy that heady sense of self-satisfaction that comes from completing a successful home-brew project.
Sidebar - I will look into making a video. I am a fair photographer, but a really lousy videographer. Something about old dogs and new tricks comes to mind, but I will check it out.
Good luck. James - K8JHR -