Think I figured it out Mike. (Unfortunately)

[Gary in Daytona]

it sounds like I have a bad coil.:cry The problems I described on the old forum only got worse until I was no longer able to get over a sensitivity of 10 any more. I tried everything we talked about and then some. Then last time out, I could only get it to settle down after a factory reset, and even then only for about 5 minutes at a time. That's when I knew something was very wrong. Called Minelab and the guy on the phone said it sounded like a bad coil and to send it in. I didn't have another coil to verify so I guess it's headed to Las Vegas. I hope it's back fast and I can get this thing humming. I'm really wanting to see how it's going to do on the beach when it's working as it should.
Good luck with your Explorer, I know from experience it is almost TOO deep on the beach.

 

[Mike (Virginia Beach)]

Well, at least you are on the road to recovery. Sorry it had to go back, glad to hear it's going to get squared away. Minelab will take care of you. I had to send my beloved Sovereign Elite in once and they replaced the main board and had it back to me real quick. Good service!

You WILL love the Quattro on the beach...it's pretty awesome.