I haven't had a chance to do much hunting this and finally made it out a couple weekends ... but the ctx 3030 doesn't sound right. the tones seems very mushy not crisp and quick,, like they used to no matter what program, or response setting I use. ive tried all the tone settings from normal on up, it does lengthen the tone but not crisp. also I notice when I place a coin on clean ground and pass over it. the target sounds 3 different times , as the coil approaches. then disappears then center of coil and as the other side passes over. like I said all sounds are mushy sounding and not crisp like they used to be... I ve had the machine a little over 2 yrs....came from a v3i and beachhunter.. the ctx 3030 has found many coins in the past where ive hunted before. . but now. something doesn't seem right. I just came from a large bark playground that I know no one has hit and didn't even hit a zincoln....scary or a pulltab.. they both registered on open clean ground but not like they used to... any ideas would be greatly appreciated.. I hate to send it in for the summer just started... thanks again and HH