I have the Denon 2802 that's hooked up to 5 speakers and a sub. All the speakers are set to small and sub = yes. In the delay time menu for the speakers I set the left, right, center and sub at 10ft and the left and right surround at 5ft. Everytime I enter out of the menu and then go back to the delay time menu to see what the settings are at, the left front channel is always at 11ft regardless if I set it at any other distance. Any reasons why my receiver does this?