I have had a 50th anniversary Fender Jazz 5 string since it came out in 1996 as a bday gift from Dad. The low B string, for as long as I can remember has always sounded like it's an old string. Tried maaaaany different brands and it stays the same for all. I finally tried stringing it E - C and now the E string (in the same spot as the low B before ) sounds as lifeless as the old B string. What's the deal with this? Is it a nut thing? Wide slot? The strings go through the body after the bridge. The other strings sound fantastic. It's almost like I'm playing a flatwound on the low E. I've struggled with understanding this for many years. Luthiers unite and help me!!!