I own a Geddy Lee jazz strung with 100, 80, 60, 40's. I'm having a problem with neck relief but it's the opposite than normal problem. My neck is straight but when I dig in a little I get fret buzz, I tried backing off the truss rod but now it seems the screw slot is loose from the truss rod. when I turn the slot back clockwise it will tighten back up and choke the notes on the neck if I attempt to turn it too much. I have raised the bridge saddles to almost maximum height which I feel is not a good way to deal with this problem though it will kill 80-90% of the buzz. This is happening basically the length of the neck on all notes! Further more I using a regular stamped Fender bridge instead of a badassII. Ive owned this bass for a few years and now starting to have this problem. Btw I don't want to change string gauge and the truss rod has not been turned a full turn either way since new.