Hi, I have two basses, MIJ 70's reissue PBass and Sire V7 1st gen. I'm most comfortable with the Sire neck. From information that I gathered, both have 7.25" radius and C shape. I know the nut width difference, but that's not what I feel the difference from them. I'm comfortable with both width, but the feel of the neck on feels different. So, what makes them different when they both have 7.25" radius and C shape.