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Hmm, my brother's XLT is a bit over-sensitive in the preset programs. This post makes me wonder if it isn't a coil issue. Thanks for sharing.

That's what I thought about mine too. I hadn't used it in quite awhile so I thought at first that it was normal but then it dawned on me that I could only get a steady hum with the gain turned down a quite a bit below the preset. Just prior to the preset it started getting really chattery, the VDI's bouncing all over when just holding it still above the ground, beeping and identifying non-existant targets at the end of each swing and then when I bumped it up to a gain of +1 it overloaded. And it was starting to irritate me because I remember turning it to +3 before with no issues. I'm now wondering how much I have missed in all of the detecting that I have done with it acting up.

Unplugging the coil made me really believe that it was the coil but to be sure, I wanted to plug a known good coil into it. When we did, it was a night and day difference, back to normal it was and all of the erratic behavior was gone.

Maybe he could try to remove the coil and see if that makes a difference and then try another coil like I did. Good Luck!

Eric