Display Alignment tends to wander

[DLCPhoto]

Update:

I've been able to document this issue, having noted what the values were for the Calibration Registry key, and then last night finding that the alignment again seemed off 1 to 2 mm.

Initial Registry Key Values:

504, 528 780, 847 794, 204 223, 205 226, 8

Values after doing a re-alignment:

505, 540 788, 849 799, 226 226, 227 231, 8

Presumably these values are x/y coordinates, with the vertical being the first of the 2 pairs of values, since in 3 of the pairs, this has changed from 12 to 22 units (whatever they represent).

I feel that I am therefore justified in concluding that this represents a hardware malfunction, and will see what Verizon will do about it.

Also, there's a Shortcut, where simultaneously pressing the Up/Down Volume keys on the side would bring up the Alignment Screen. I had used this once before, but this also no longer seems to be working. Is there a Registry setting for this, or is this also a Hardware issue?