I've played maybe twenty F basses in my life. About five or six of them have sounded a little thin on the G string. It's not exactly "dead", it just sounds like the G is a little less emphatic than the other strings. Has anyone else had this experience? What (if anything) have you done about it? Is there a trick during setup, or is this due to the pickup(s), or the preamp, or what's going on?