Not experienced wit those tires. I had them once a long time ago, when I got the bike, and was told that's the kind of wear to look for. Looks damn near perfect to me, but I'm no expert.
However, keep in mind that not having perfect wear doesn't necessarily mean you need to adjust something. Dave Moss says that sometimes, especially in racing, you may want to sacrifice wear in order to get better traction in some parts of a track and you'll chew through a tire much quicker but you'll decrease your lap times. It's always a compromise. If I was in your shoes and had that tire, I wouldn't change a thing...aside from using more throttle and less brake (which has always been my problem

).