Today I received this guitar: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7384034762&viewitem=&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1 It's in beautiful shape, and I really want to like it. However, the low E and G strings sound "dead" compared to the other strings, all up and down the fretboard. It's subtle, but enough that I don't want to put up with it. Those strings do not sustain as much, either. Is this something that can be tweaked? I'm not adverse to upgrading hardware. What should I look at to try to fix this?