Here is a picture (from 4 years ago when we did our inspection):

The supports are currently ~16" but I'm reading that it needs to be 12" for angled decking. What kind of ramifications am I looking at if I just put down the angled decking anyway? As small as the deck is I can't imagine it would be a big deal but I wanted to check first. Obviously I'll go another route if the deck is going to crumble after a week.