Removing or Hiding the Previous/Next Buttons?

If I remember correctly, if you add custom prev / next buttons to your question slides and control the visibility with a variable, the built-in buttons do not appear since there's already a slide trigger on the slide.

1) Add custom back / next buttons (default to hidden) to your slides along with your submit (might be best to do this in the master slide for the questions)

2) Add a variable (inTest = true)

3) For each slide (or master) add a trigger to show the custom prev / next buttons if inTest=false.

4) Also add a trigger to hide the submit button if inTest=false;

5) On your results slide, set the inTest variable to false

This'll make your submit go away and the prev / next appear during the review. It should also suppress the appearance of built-in navigation, provided you have them unchecked in slide properties as well as the player.