I'm using a Roamio OTA connected to an outdoor antenna. What I would like to know is how much signal loss is introduced when the Roamio splits the incoming signal between the 4 tuners. The reason I ask is that I have 2 weaker stations in my area that only pull in about 35-40% signal strength on my Roamio, so the channels are unwatchable. But if I plug my antenna directly into the TV I get around 50-60% signal and I can watch the channels no problem. Is this a common problem with the Roamio or is my device going bad?