I purchased a used Tobias about 2 months ago, and I immediately put a new set of Carvin strings on it. Instantly, I noticed that the low B completely lost any low end, and it rattled. Now, when I am on stage, every string sounds great except the B-String. I have lost my identity! *sobs* So, I bought a brand new package of Blue Steels, thinking that it was just the Carvin strings. Wrong again! The Blue Steels helped a little, but I am still missing any of the real balls that the low-b is supposed to give me. I dropped a pretty penny on this bass, but I can't seem to get it to do what I want. Any suggestions?