The SY is such an increadably tuneable bike that you can personalize it to be pretty much exactly what you want. I have had 3 now and I prefer the Racing model with the heavy flywheel and a slow throttle. Mike, at the TryalsShop, sends mine preset that way each year. I have spent some time on a Racing with the light flywheel, fast throttle, and quick timing. It makes for a very snappy bike and a little too quick for my liking.
Having said that, I now have several hours of practice and a couple of events on my 2004 model. It has the the quick timing, heavy flywheel, and slow throttle once again, but I have to say that even setup that way it is much more responsive than last years bike. When I first uncrated it and rode it, I would have bet anyone that it was a light flywheel model. I can only imagine what an 04 that really had the light flywheel and fast throttle would be like! For those that like their bike that way, and have accused the Scorpa of being a little slower on the snap, I think they will be in for a real surprise this year.