Anyone else have problems with their compass? Mine seems fairly random (i.e. not consistently off by the same degree/direction; sometimes correct and mostly incorrect). Any ideas on what the problem could be? I tried messing with the zone, but that didn't make any noticeable difference. I also tried following the calibration process (though my read of the owner's manual is that it should calibrate automatically), but was unsuccessful. Since I don't see any other compass issues after a quick search, I'm probably missing something simple, but would love help figuring out what that simple thing is. Thanks.