I bought an Ibanez SR 375 last week. It has a bad hum that goes away when you touch the strings, however when you let off on the strings it is right back there. Here is the message I got from the tech who is working on it. I am confused! "I looked at the bass. Hum goes away when touching strings. This means that circuit, bridge, & strings are grounded properly. The cavity is shielded and all the wiring look fine. All the frets are level but I adjusted the truss rod to get rid of fret board buzz. I also smoothed the fret ends, they were pretty sharp. You can pick up the guitar tomorrow if you like." Any help would be appreciated.