I have a Cort C5 Plus. It doesn't have any truss rod, or at least I can't find any way to adjust it. Once I pull the low B string (which is 130 gauge, non tapered, factory one) it doesn't make any buzz, but after like 3 seconds I can hear BZZZZZ till it stops. My string hieght at the 12th fret is like 3.5mm (a little bit above 1/8) and I still can't get rid of the buzz. If I put my Gruvgear on, I still ain't sure if it diminuates the intensity of the buzzing. I will try to put a little thread under the string at the nut, but first I gotta buy some thread, tho I try to fix the problem somehow with you folks, because it is probably a minor problem . If I play with a pick, the string buzz's is awful. I forgot to say I don't have any luthiers nearby, I can't sell the bass, nor return it to the store. Or maybe I am pulling the string too powerful? I don't know. I started bass some days ago, and I am nervous bc I don't know if it's normal for the low B string to buzz like this after some seconds. Please help! Thanks in advance!