I wanted to ask you all a question. I have been playing a long time (over 40 years - yikes), mostly Fender 4 string jazzes (or clones like my Lull M4V), both fretted and fretless. I do most of my own basic maintenance and setup work and have become fairly good at it. I am also very familiar with the potential for dead spots with Fenders/bolt on necks. I have very carefully picked out my current gigging basses with that in mind and they are all pretty solid up and down the neck. I have used roundwounds for decades (Fender, D'Addario, Rotosound, Thomastik, DR ..etc) most recently I have settled on DR Sunbeams which I really like. But on one Jazz (MIA Deluxe) I decided to try some flats for the first time since about 1972. I thought it would better fit a project I was in that would benefit from a more flat like/thumpy tone. So, I put some D'Addario Chromes on the bass, and while I liked them in general, it caused a terrible/very noticeable dead spot to appear at the 7th fret on the G string where none had been before. I worked with it that way for a while but finally decided to take them off and when a new set of Sunbeams went on, the bass was as good as always. So, what gives ? has anyone had this experience and is there some way to adjust the bass to get around this ?