Using the WBX-ADAPT to expand a gang and install a Pico remote control is great when you want to create a All On / All Off scene by the touch of a button. Nevertheless, several users have mentioned that the WBX-ADAPT when installed on drywall ends up not being completely flush with the wall. If you notice well (pictures below), the WBX-ADAPT has a hard plastic flap on the back that is basically there to hold the finger pressure when the user presses the Pico buttons. But if you have drywall behind the flap is no longer needed and you can extract it from the adapter (the drywall will basically be the stopper). By removing the flap, the adapter stays completely flush against the wall. However, if there is a wallbox behind DO NOT remove the back flap, otherwise the Pico will tilt when the user applies pressure on the buttons.