Hi, The other day I was working in a house about 5 years old and I saw something I thought was neat, wondering how prevalent it is. To fill the gap between the front of the electrical box and the surface of the sheet rock, the electrician threaded the outlet/switch mounting screw through a short scrap of romex sheath that could squish down and keep the switch/outlet forced out away from the box, flush with the wall. Is that common? new? good idea? bad idea?
Whenever I've had that problem in the past I would just put a bunch of small washers on the screw. I didn't know if I should switch to doing this instead.