My goal was to find , the best settings for the SOV + 15" WOT combination I started in fixed all metal, sens at 0 I have the 5,6,7,8,9,10, dimes and a 11" deep quarter after going low and high on the sensitivity i found the best spot was between the C in cancel and the 3:00 oclock position this gave the best depth in fixed all metal with the best dicernable signal and in disq both threshold set at a good humm but not loud but not soft I found if i cranked the sens the ground efect would blurr the wavy tone in all metal to the point it was hard to hear and in disq it would get scratchy or not come thru but at this setting i mentioned i got the 9" dime in disq with a good signal both ways and the 10" dime the 11" quarter came thru one way with a bit faster sweep just thought i would mention this in case someone gets a WOT and by the way in all metal i can get the 11" deep quarter and 10" dime with a 1.5" 2x4 over the ground and still get it so thats good but it would be nice to have a gpx 5000 for a bit better depth