I'm having a hard time reconciling your text with your picture.
Looks more like 1cm cubes?
And the contact is the circular spot on the bottom of the key?
Rather large???
What part got removed by the customer?







The customer has ripped out all the contact buttons on the right side of the
keyboard, the left side set is still in place and working.
The photo shows the right hand side of the PCB with 2 buttons from the left
side put in the photo to show the size of things.



Gareth.