Allot! I've been detecting for twenty plus years, I know how to set up a detector. New Time Ranger Falses (high tone that disappears) on just about every swing. Sensitivity on minimum, Ground reading of around 70, presets 1,2 or 3. Tried eliminating L1,L2,L3,L4 & foil. Changed to my Land Star coil. New Batteries. Seems like it is giving a false high tone on rejected iron with the first pass of the coil. Any ideas or just send it back?