Kids' learn-your-name puzzle (revision 2)

A customizable puzzle where the right letters have to be found to spell out the puzzle's text. My hope is that with this one the focus will remain on the letters and not the shape of the pegs, because it's hard to tell the shapes apart. I've no background or experience to prove that it will, it's just my hope. :)

The pegs are 3 layers:
- A cube where a letter has been subtracted.
- A solid cube.
- A unique random (or preset) combination that will fit into the slot on the board. By default