I will give you a few of my opinions about possible problems you are having.
Make sure that coil is ON the ground. Absolutely NO air between it and the ground. Don't let the back tip up or anything. Ditch the coil support if you have it on and lossen up the coil so it flops. This ain't your dad's old detector and it does not like air between the coil and ground like older, and different brand detectors do. (I think Garrett detectors recommend 1/2"-1" off the ground for example)
If you are in factory preset Auto sensitivity at 16, bump it to 28-32. If hunting in auto only. If you are using manual do not go above 17-20 unless you get a stable threshold during your sweep. All new users think they have to have extremely high sens in manual. You don't, trust me. Overpowering it in bad soil will mask deeper stuff. Auto sens between 28-32 is just fine. You will not miss coins! Some people do not agree. But they are wrong. <img src="/metal/html/biggrin.gif" border=0 width=15 height=15 alt="

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If you are coming from an explorer from a whites or other brand of fast sweep detector, slow your swing speed waaaay down. About a foot a second. The explorer can be swung faster and get depth. But newer users are overwhelmed with all the signals they get. Slow is the way. The slower the better. You aren't going to cover a football field with an explorer like someone can using an XLT. But you can go behind them and find everything they miss. <img src="/metal/html/biggrin.gif" border=0 width=15 height=15 alt="

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Listen to the audio. If the audio sounds great when you circle the target but the cursor on the meter (or numbers in digital) are bouncing around, dig it. Only shallower stuff will lock on solid in one spot on the screen. You will learn the bounce quick. Just right now make sure you dig anything that repeats audibly.
That should do it and as always, just my opinion. Others have different methods that work for them. But that is just 2 d@mn bad! <img src="/metal/html/biggrin.gif" border=0 width=15 height=15 alt="

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