The larger keys sometimes have a spring attached, so you need to be careful to pry open the side
that does not have the spring clip (the springs were on the right side of my model). Careully pry open
the left side, slowly open the key to the right side and lift the key upwards so the spring remains on
the keyboard.
For the space bar, the spring is on the top, so pry it open from the bottom, and carefully maneuver it
so the clips clear the plastic hooks on the keyboard, the spring stays on the space bar.