Hey everyone, I have bought a Cort EVL-Z4B bass 8 months ago and until now it was a very good bass, but there's a problem for me, the strings touch the frets and when I play an open note like an A or D it doesn't make the soun of the note, it sounds like I'm hitting the bass... I have no idea why it's happening and I can't touch the bridge since I don't have the tool that it needs. It would be very grateful from you to help me thanks.