i recently bought a Yamaha BBN4 from samash cause it was on sale from $500 to $200. It's my first instrument. Since i got it, i get a real annoying buzzing sound coming from the bass when i play. Im pretty sue its my strings hitting my frets cause i get it even when it's unplugged. I have no clue how to raise the saddles, and i dont even know if thats what i have to do. Ialso think that the strings are way to close to the pickups, but im not sure if thats how its supposed to be. PLEASE someone help me!