I've had my Pro for about two weeks, and it's worked great during that time. However, yesterday I took it out for a hunt, and noticed that, when I turn it off, it no longer stores the custom settings I program into it. It seems to revert to factory settings every time it is powered on... and that includes discrimination patterns, sensitivity, and ground balance. Now, when I turn the machine on, it is set to the Standard Coins mode, even if I had previously turned it off in Pro Zero mode, for example. Previously, it worked fine; honestly, this seemed to come up out of the blue. I'm thinking that a trip to Garrett is in order for my unit... anyone had the same problem? The detector itself still works fine, but I want to know if there are any quick fixes to this problem before I send it in.