I would like to change out the four screws holding the faceplate and the 4 in back. I thought maybe brass or black would look great. Anyone know: 1. If the screws can be removed safely without endangering the watertight integrity or having things fall off inside? 2. The length and threading? 3. Torque setting, if any? I know I have to use a special security screwdriver to get the originals out. Thanks for any info.