Fine Tuner Ratings

Spent 3 hours playing the highest rated single deck game in vegas recently without being tossed. It obviously wasn't a full spread and I was down for the first 2 hours before I got my money back. But having been computer caught there in the past after 45 minutes, I was surprised to pull this off.
For those that know the game, have things changed there or did I just have a fortunate evening of quality play?
PS I miss my GC membership but don't have the time yet to jump back in and participate.