The problem occurs with all of my speakers(BG Radia, Green Mountian, EFE Tech, Michaura) amps(Jolida, ASL, Vecteur, Sansui) and sources(CD, digital music, tuner). It's got me baffled. I do notice that when I move my head laterally to the left about six inchs the image stabilizes in the center. When I look at the left soundstage the image moves even further to the left than when I look straight ahead. It occures on both the long and short wall. My room is 15x30x8 and symetrical. I'm begining to think it is my hearing. Even thought the doctor said my ears are clear I bought some Murine ear cleaner anyway.