I got a SEF 10 X 12 a while back, been using it on every hunt. But now having a problem with it reading beer cans to the sides of the coil. Today went to a new lot kept getting signals in the silver range and it would be a flatten out beer can a inch under ground and up to a foot to the out side of the coil. It seems to throw a signals outwards from the sides of the coil. Really making it hard to hunt in trashes areas. Back down on the gain and sensitivity still no help. In trashes areas it is all over screaming out signals. Small pull tabs and bottle tops no problem, but a beer can, even in cut up pieces will a false signals even in pin point mode. Made my best find with it 2 weeks ago with a 1912 V nickle, but the lot was pretty clean, other than a couple of under ground pipes that I couldn't hunt around. I am starting to wonder if any one else is have these problems with their SEF coil. Even trying hunting in all metal mode. Starting to think I got a bad coil.