my wd20ears parked at 8 seconds too..
in the first days of use the haddrive had 130 in LCC count
after i changed to maximum of fixe minutes ( i have not disabled the function)
right now i have 235 in LCC count after 3 months of normal use for backups
i have put in disabled at first but it sems better to me five minutes
8 seconds default is completely stupid and WD sould warn people of their mistakes