My EXP XS shut doen on me while I was coin hunting in a park. A few days later I got it going again but the screen said "reset required". I started using the machine after a few adjustments without reseting it. I seemed to be a lot more powerful. I was hitting 7 inch coins and they were sounding off like they were an inch deep. The next day I reset it by holding the power button in a few seconds so that it went back to factory settings, then I set it up to suit me as usual. But it did seem like a different machine when I was running it prior to resetting. I almost feel like trying it get it shut down again so that I can run it without it being reset! Has anyone experienced anything like this? Any input would be appreciated.