Tear Down...

Here I've drilled two 1/8 inch holes down through the fretboard into the dovetail joint. You will know you're in the right place because you will feel a void after drilling through the fretboard. This will indicate that you are in the dovetail joint area.

Note also the pin used to inflate basketballs. I have cut the end off this pin so that the hot steam will travel in a downward direction.