For the plug-in install, the provided screws are too long. I replaced them with 30mm long M4 screws (0.7 thread) and a black washer (1mm thick) for a flush and stable fit. The washer changes the look of the face a little so you might want to go with a smaller diameter than what I happened to have on hand. Hope this saves you some time at the hardware store.

Looks great. Knocking off a star for the inadequate instructionscomponents for plug in install.