You may have good results adding a VHF high band antenna to your attic if you have room. I'm in Northfield and that's what I use (on my roof) -- there's really no way to get 9 and 11 reliably with just a UHF antenna.
The Winegard Yagi I am using is now discontinued but is similar to the Antennacraft y10713. Since you're in closer the Y5713 should work ok for you even inside.
http://www.antennacraft.net/Antennas/AntennasVHF.html