I noticed that acoustically the B sounds fine in comparison to the other strings. Its when I plug it in that the B goes dead and lowers in volume compared to the other strings. Is this a function of the pickups? The pickup height is in the neighborhood so thats not a factor. The bass is a 2001 MIA deluxe jazz. I'm thinking maybe a switch to SD would be in order but I hate to spend the $$ if my hypothesis is incorrect.