Strange thing happened this evening. I took the detector out with the new probe and new Gray Ghost headphones to a site I've hunted before. The machine was acting very strange. I would hear the sound but it would take 4 to 5 seconds for the crosshairs to move. It seemed like everything was in slow motion. I was so exhasperated by it I had to go home.
When I got home I tried the old headphones that came with the Explorer. It worked fine then. But after that I put on the new headphones and then it worked fine. So I don't know what the problem was at the detecting site.
Maybe something just needed to rattle in place on the way home?
Anyway, thanks for the info on where to put the new equipment.