I swear, they're changing drop rates. Since I can't tackle these events, I've been farming Cell's z-hard droppable boss. First few days I went from SA1 to SA7. Then a break, got another one. Then all weekend, no drops. I'm at SA9 now, and I can't get the freaking last drop! What the hell!
EDIT: Complaining works. Finally got the last drop... and he dropped two at once. They can do that? Hunh
EDIT: Complaining works. Finally got the last drop... and he dropped two at once. They can do that? Hunh