I recently purchased the 595 and since I am new to the HT thing, I have a question about speaker setup. When I try to setup the speaker distances on the receiver, it keeps changing. For example, if I enter my center speaker at 2 ft. and then enter my fronts at 4 ft., the center distance then changes when I return to the center speakers. Am I making sense? Everytime I put in a number of feet for each type of speaker, the previous setting changes. Am I doing something wrong and what difference does this adjustment make? Might be a really stupid question, but I am frustrated about this.