No, no modifications. It was as simple as setting to zero in the wrong spot. I knew that if I finally got some sleep it would probably be obvious, and indeed it was. I thank all for their help, though, because had I suffered a fourth sleepless night then I would have been an addled-brained caffiend this morning and who knows what time I would have wasted...
I apologize for my comment. I'd just been beeped out of bed, finished my indentured servitude, and decided to look in on the Monastery. I won't do that again... 8-)