I've had the e trac going on a few weeks and yet to find any coin deeper than 4 or so inches. I'm starting to think i have a faulty coil or something. I'm hunting 1900 homes in auto + 3 usually 18-20+3. I've yet to hear any good signal deeper than 4 inches, I've watched videos of others getting nice repeatable signals 6-8 inches. We've had a lot of rain the last few weeks and the ground isnt hard. Still have yet to see a silver with This thing.. and I've dug over 5 dollars worth of clad. very disappointed. I know my yard has silver in it, our house was built in 1906 and I've combed it over countless times, yet I cant get anything deep. Whats the deal? Any tips that can help me get deeper repeatable signals, should the sounds of a cladd dime sound like one that is 6+"? what sort of sound should I be listening for?