Hi, I'm a regular reader of Bass Guitar Magazine. Don't know if you've seen it, but on this month's front cover is Duff McKagan. He's got a jazz bass in his hands - a white bass with black pickguard and maple neck and fretboard, with black binding and block inlays. In the feature article, he explains that he likes jazz basses, and says his current bass is a Geddy Lee jazz bass with a Reggie Hamilton modification to it - what on earth does that mean?!