I've never been more excited to see a big white fed ex truck, but after a couple hours I'm left wondering if I've made a bad choice, or if I've just got a machine with the gb not properly set. I'm brand new to detecting so it is probably me because I'm coming from an old Whites 1000 that doesn't have to be moving to beep, I got the 8" coil version and thus thing acts like a mental patient, erratic and beeping at almost every stop of the left swing, when I raise it and gently shook it it beeped right along with every little shake. Did I get a bad coil? What is going on? I really want to love this detector like everyone else I've read about, that's why I bought this machine was purely on research because my knowledge is almost nothing right now.