HP-41c back case screws holes repair

[tribidouille]

   
A certain amount of tril/error and missed pieces...


   
Lot of tries until I found the right dimensions (talking about some 10th of mm).
My thoughts were these:
If the pads are too thin, the pressure that has to be applied on the flex cable plastic support will be done by the rear case inner face, leaving the pads press on nothing (only pull on glue), hence not good.
If the pads are too thick, the flex cable plastic support will press too much, risking of damaging itself and the board and not allowing the case to fit correctly.
I decided to let the pads pass over 1 or 2 tenth of mm the flex cable plastic support. This way, the glue will never have excess traction.