Looking at the items that frint drop and their chances (talking exclusively about S), at a first look it seems to have an extremely low chance of not dropping any S grade items. But it still should be possible and this could have been that one special time. Just please, post the drop list of next frintezza. 'Cause i seriously don't see how they could make the chance lower then retail only for frint. It's possible only by manually modifying them and said they didn't changed anything, rates are x1 just like retail.