OK, now that we've solved a whole bunch of firmware issues (thanks jama!), next on my list of Apache gripes is the loose slider.
Mine has become decidedly floppy after a few months.  It stays closed (just), but there is a good 2mm of flex at the left hand edge when closed, and it slides half-open quite frequently due to just the pressure of being in the factory belt case.

Is there any way to tighten this up?  I'm not beyond opening the device to tighten a screw, but I'm not going to add plastic shims or anything tricky like that.