I've had my Spectra about three weeks, and have been using it on a FL beach. I'm using the salt water beach program. Recently, it started giving me false signals at almost every swing. It's frustrating to hear a signal, and find nothing there. I switched from the stock D2 coil to the Eclipse 950 coil, but results were the same. I had this same problem with my DFX-300, and sent it back to Whites for repair. Can anybody help me? Thanks.