Quick question re: rear surround speaker placement... Picked up my Klipsch set this afternoon and am running wire now, here is my question. My seating is at the rear wall, i have the Klipsch Rs3 Series II surrounds, do they have to be mounted the exact distance from the front wall for surround? I have a window on the right hand side of the room that interferes with mounting both speakers at the same distance from the front, is this a problem? If not, will i suffer any surround sound performance by mounting the left rear 1ft from the back wall, and the right surround 5ft from the back wall? thanks for the input.