I´m getting a lot of fret rattle ONLY in the 2nd string and ONLY at the 3rd to 7th frets. It´s a Jazz Bass, the strings are as high as I can play with them (too high, in fact) and all even at height. I´ve also loosened the truss rod a bit to set more relief on the neck, but that didn´t fix it. Please help me! What do you suggest?