same here, flashed diablo, set up modest ->battery drain
reflashed diablo without setting up modest ->battery drain
reflashed chinook ->all is fine again

chinook vs. diablo

diablo:
pros
agps, fingertap vs. stylustap recognition, update without flashing
cons
only a half-day battery (n810)

chinook:
pros
two days battery, for me better microb rendering (itt for example)
cons
all diablo pros