I know that sheetrock screws should never be used to support a faceplate and I have often seen sheet metal screws recommended for this purpose. I have some #12 square drive McFeely screws that I'd like to use. They will each extend 3/4" into the glue block and there are a total of 8 holes in the faceplate. #12 is a pretty beefy screw, but I don't want to sacrifice safety. Will these work or do I need to make a Home Depot run to get some sheet metal screws?