I too, feel victim to the "tuning" bug when i hit around 86%. it was really hard to break the habit, and eventually get to 90%, where i stayed again, whilst i took hundreds of photos. then i got to around 97%, i stalled again, this time on DM34, which i INSISTED on beating before it was the final event, based on principle. On my previous files, I'd beaten it. but this time, i just couldn't. it was like trying to break a long standing record. as soon as you get close, something goes wrong.
when i beat it, i plowed through the final events, only to find myself .3% or somethign dumb like that short. after runnign through every single event in the game, and checking like 6 years of calendar (for Dm1 to be completed first), i found that the el capitan race in the American all stars tourney was bronze, not gold. raced er in a 2J for kicks. Beat the bejesus out of those pricks.