Quick question about Dish 500 wiring. When I built my house I put three rg6 Quad Shield drops on the roof for d*. Looking at dish 500 it uses four drops. Can it use three or am I going to have to figure a way to fish another wire up. I just don't want some basic install and have to put a hole in the side of my house since I took the time for the original cable drop through my roof and into my basement. ; )