Hello all. In my kitchen renovation, I have exceeded the cu in needed to not over fill three gang junction box. I do not wish to use a 4 gang box due the the aesthetics (the location is undercabinate in kitchen). I have 2 switches and an outlet. Is it against code to install a 4 gang and spackle over the one slot and place a 3 cover plate over the rest? Removing wires will not be possible without major renovation.