Hi fellows, I own a Marcus Miller bass and this really is a very, very nice bass However, my strings (all 4 strings) buzz a little under the 12th fret (13th, 14th, and so on ). They dont rattle between the 1st and the 12th fret How can I resolve this? Is this related with the truss rod? Ive done some minimal adjustments and have it almost flat.... This is the way I like it My action is also considerably low Thank you so much Best Regards.