So I've been chasing an annoying string buzz on my new 2420 P90. I am very aware of the theory of what causes buzz and how to set up a guitar to avoid it. I've set the neck with minimal relief and all strings are good with the exception of the D string which seems to buzz all the way down the fretboard. I've tried adding relief and I've raised the bridge way up but the D string still buzzes. I'm hoping its just a bum string unless anybody else has an idea? BTW, I've tightened up every screw and I've replaced the bridge with a Wilkinson roller with no change to the buzz problem. I've also checked the frets with a rocker and found nothing excessively out of order, which is what I expected given none of the other strings are an issue.