I have had my se for 2 years. Started the year off detecting in Texas and KY and was doing excellent. Machine was working well and the finds were outstanding. I started detecting in WI and my machine is going crazy. I lower the sensitivity, lower the IM, switch from deep on to off, fast on to off and all I get are noise and more noise. If I get any signal worth digging, there is nothing in the hole. After an hour of not finding a thing (while a buddy who is detecting next to me is finding stuff all over), I get a penny reading at about 4 inches, dig the plug and out comes one of those big old time horse bells. That never should have registered around a penny. I gave up at set the machine on factory preset. Over the next hour I found 2 wheats, about a dollar in various clad and a silver medallion (9-10 inches deep). The machine seemed to be working in factory preset but not in the settings that I usually use. Do I need to send it it or what. PJ