Test it out with some gold rings and silver coins.If it air tests both rings and silver coins out to about 8 inches deep, it has NOT been tuned to the 9x8 coil and will need to be sent to the factory and you need to <STRONG>specify you want the LST tuned in the discriminate mode to the 9x8 coil.</STRONG> Your test results should be closer to what I am getting then, about 8 inch on a silver quarter, and 11-13 inch on a heavy gold ring. This is the only machine I ever used that would go deeper on gold than on silver, AFTER the retune. It is also my understanding that the machine comes standard with the 5x10 coil not the 9x8, that is normally a 150 dollar option.
--Tom