once again thanks for previous help with truss rod. now i have a nut problem. i have the strings wound properly about 3 wraps and it is pulling downward toward the nut, but it makes a kind of fluttering sound when i hit my b string open. if i put pressure on the string just behing the nut it stops. i can see a little gap under the string on the headstock side of the nut. it seems like it just doesn't want to sit in there all the way. this is a brass nut also.