Nad 3020 - square buttons?

Acording to hiddengerbil's pic left button is one I made.
One of those from my pic, 3D printed.
GqAzdaU.jpg

Buttons I made are god for NAD 3020. This is NAD 3020
NAD3020_amplifier.JPG

NOT the same buttons as NAD3020E for example

VCBmtgR.jpg
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Hope this helped
 
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I have a NAD 3020 that I recently bought and restored with DeOxit. Works great, but the square buttons mentioned in this thread all pop off every time they are used! I guess this is why everyone here is seeking spares. Any ideas for securing these so they won't pop off? Could try superglue, but not sure if this is safe or even whether it will work well.