I've had my T2SE a couple of months now and I love it..But the other day, I was starting to hunt on ground I've been on before with this machine and it always balanced around 63.When I first GB it said 43 and I thought, that's strange.. Hunted for an hour or so and took a break for about 5 minutes with the machine off, cut it back on and it would not ground balance.It would not change, no matter what I did, off of the 90 preset.Then I noticed no reading at all on the Fe graph swinging or ground balancing.So I cut it off and then back on a couple of times,still the same.I checked the coil connection.I manually balanced and started hunting, still no reading on the Fe graph in either all metal or disc.Then it seemed like it wasn't hitting targets all that well..Hard to explain, but the ID would be correct, but the audio seemed off..Like a chirp on my silver wedding band,not a full beep if that makes sense..I have alot of hours on the batteries(Duracell) .I would say at least 30hrs..At first they showed 2 blocks below full when I started to hunt and then after about 10 minutes, they went to 3 blocks below full. I remember thinking the last couple of hunts, that I couldn't believe how long these batteries are lasting..Anyway, when I got home I put in fresh batts and tried to ground balance in my yard and all seems fine but the audio still sounds off to me(with my ring)..I have not had time to hunt with it again.Just wondering if anybody else has experienced this problem.