Room mode ?'s

Hi,
I bought the Rives audio cd to find my prominent room modes. I found a big one at 32-63hz, and also at 6300-8000. Db's were highest in my right rear corner. I put 2 super bass traps there and it seemed to help. My speakers are 3.5 ft from the front wall, 16 ft total length of the room. Where should i move my speakers? I can't afford to move them out much more as this is the living room and they would be in the way. Thanks.