Does anyone know the string spacing of an NS Design Wav 4 or a NXT4a EUB at the bridge, specifically between the center of the E string and center of the A string? I own an NS Nxt5a and the strings are considerably closer together than on my acoustic 3/4 upright. I'm really looking to find something in an EUB that is closer to feeling authentic. It just feels like my NS 5 string jams me up. Thanks!