It is possible to change one's alignment by going to a temple of one of the Gods (not a Cohort) of the opposite alignment and seeking permission to change. This is granted upon a roll of 60 or more on two percentile dice.This is opposite the usual practice where a referee might judge a 40% change of gaining permission from the temple, with the player succeeding in the roll if he success 40 or less on D100. This peculiar practice appears throughout the rulebook, such as on the table for acquiring bonus spells as a character gains new levels. The table only makes sense if one must roll a certain number or higher on percentile dice. Otherwise, the chance to gain a Group I spell (the least powerful type of spell) decrease from 80% to 70% once a 2nd-level character gains 3rd level.
Granted, this "higher is always better" interpretation is consistent with Professor Barker's freeform "Thursday Night Rules," but it's very different than the way percentiles have been used in nearly every other game I have ever played. Or is it? Perhaps I've missed something somewhere. Can any think of using percentiles in a fashion like this elsewhere, particularly in the early days of the hobby?