When in prospecting mode I hear a faint beep and then switch to C/T mode to help identify it, the C/T mode doesn't make a noise. If I dig the spot I find a small piece of metal (not gold, looks like melted aluminum). Is the C/T mode just not set right to find the target? Just to clear up any ideas on why I was trying this, I read this on another thread and thought I would try it.