Well I have had the bike for a couple months now, 2500 miles on it. The rear shock is a Penske. Stock otherwise. This weekend I will be modifying a set of 600rr HH DP pads to fit, the stock pads are not that great, and worn out to boot. They did not last very long, hauling that big bike down from speed is hard on them. I did get fade at Sears Point in a couple of hot laps chasing down a rider.
With the new shock lengthened 5 mm and a 180 rear tire, the bike turns much better than it did stock, but gettting it turned is still a problem. It needs a lot of input. It is certainly stable, really stable. Power is great, I have to say. I find myself getting a lot of speed between corners and coming a little close to the edge.
I may raise the fork tubes 3-5 mm to help turn in, will see.