Anyway, string buzz at the nut, I thought it was because I cut the string too short and am too cheap to replace it, so I got a bar to be sure the A string breaks farther at the neck. Simple fix, but the A string's notch in the nut is WAY too big. Previous owner tried heavier strings perhaps? Anyway, it's a MIM plastic nut on a P-bass, definately replacable, but I'm wondering, does the nut material REALLY matter? Graphite isn't totally necessary because I don't use a trem, but I do a lot of bending... Good idea? Will the material make much difference in the tone with active EMG's? I just spoke to a guitarist who recently got a new nut for his guitar. He's trying to convince me that it really only effects the trebles, beyond the range of a bass. Should I look into a new nut? What are the pros and cons of each materials?