I just found my first silver with the 250 3 days ago. It was a 56 rosie about 5 inches down. It only whispered at me until i turned up the sensitivity. That would be my best advice. Hunt with it set on 5. If you get a good signal, but it doesn't repeat try turning up the sens. to see if it gives a good steady signal. Also don't hunt parks and schools if you expect silver with an Ace, they are just too played out. A high end machine might still pull out some silver, but the ace just doesn't have the depth. (Unless right after a rain or watering) Good luck.