I'm planning to add an outlet for my wall mounted TV. The source outlet is about 3 studs away from where I want to put the new outlet. To avoid having to repair drywall caused by running romex across the studs, I would like to drill a hole in the wall header, run romex from the source outlet straight up into the attic, run it along the header across 3 studs, then drop it back down through a drilled hole in the header to the new outlet. I live in Wilmington, NC and wonder if there would be any code problems with doing this? Also, does anyone have a suggestion how to affix the romex to the header?