"Dan Dubosky" wrote in message
...

The screwdriver is a jewelers screwdriver of good quality and even trying
to turn the screw with a pliers attached to the screwdriver does not
permit turning. I have not damaged the heads of the screws, but they
certainly are not yielding.

If they are screwed into plastic, sometimes you need to apply a hot iron to
the head for a second. But you need to be brave an knowledgeable or be
prepared to lose the device. And you need a screwdriver that won't slip.
Some have a hole so you can apply more torque.