I just picked up an American Deluxe Jazz 4 a couple weeks ago. The fit and finish of this bass feels great, but the E string sounds very hollow and boomy compared to ADG. I wrote it off at the store as just a dead string and replaced the whole set with D'Addario XL nickels as soon as I got it home. At first the string change seemed to resolve it, though now I'm wondering if it wasn't just a placebo effect and I maybe just convinced myself it's fine because I love the rest of this bass so much. But now it's clear that if I play down the strings it goes "purr-purr-purr-THUD." Does anyone have any recommendations as to what the potential problem(s) may be? It sounds like this both acoustically and when plugged in, so I'm wondering if it's got something to do with the nut?