I have a Yamaha BB1025X that I bought a few months ago. I like it except it had what I thought was a weak B string. I even had it listed FS. now I would like to think I have pretty good knowledge about setting up basses; I have even learned to shield and solder and install preamps. (drop-in). but I admit I am a player rather than a tinkerer. I took the bass over to my good friend's house the other night (Crabby here on TB-he happens to know a lot about guitars and basses). he notices right away when we plugged it in that there was a strange distortion/warbling going on when the gain was cranked. I told him that the B string simply vanished and had a spongy, quick decay-I changed the B string twice to no effect. because its a passive 5er, I assumed it wasn't as hot an output as an active bass so I cranked the PU's fairly high; nothing unusual though. he immediately saw the issue-he said the J PU was too high and he radically dropped it down. instantly the bass sounded and responded better. the B was much better. he said that this was happening because the PU's were hot and needed to go down because they were dragging the strings. Crabby has an excellent ear-he understands the nuances of instruments. he simply loved everything about this bass and said the B was better on it than one of his boutique 5ers. I am glad I took it over to show him; I may have sold a bass that need not be sold. lesson learned.