Here is a little back story before I get to my current situation... I bought a second hand Ibanez BTB 405 (35" scale, two truss rods, 5 string) and I didn't notice that there was anything wrong with it. Recently I've noticed that there is a problem however and it is driving me crazy. There is a lot of neck buzz on the B string alone. Played through an amp, there is a sort of "planky" tone, and the duration of the note is not very long at all in comparison to the other strings and my other 5 string bass! I adjusted the right truss rod (looking down the neck), turning it about a quarter of the way. Still having no effect and after turning it to the left again a little bit, I replaced the string, winding it all the way down and the problem is still there. I am quite frustrated at this, I'm not sure if it's actually supposed to make that sound or if it really is a flaw of some sort. Is there anything I can do to try and fix this? Thanks for reading!