Hi guys I'm really new to metal detecting so I thought I would buy what seemed to be a good machine. I'm seem to be having trouble with it. I have turned the sensitivity 3/4 of the way off and I still get false readings. When I do start to dig and set the detector off to the side it will set there and make all kinds of noise. What am I doing wrong or do you think there is something wrong with the detector. HELP me somebody PLEASE!