I'm thinking of trying out heavier gauge strings, but have a tiny problem. A string thicker than .130 won't go through my bridge... It's mainly because the end of the string isn't wound up evenly. When I bought my bass (used from a friend) he had a B string in it which had a narrowed end in it. Does anyone know what strings have this narrowing in them? I think they were D'Addarios but i'm not sure. And if you have experiences with this type of strings, let me hear of them. I'm thinking that does it affect the resonance of the string in any way, or does it change the sound/feel?