The 330 is a little sluggish to "spin up" in high gear until it finishes break-in, and then it "wakes up" quite a bit. The 570 should be less so, but that may be what you are feeling.I felt like when I gave it throttle it wasn't extremely responsive.
Ace......my 570 woke up at about 13 hours, and when it woke up it was very noticeablePicking up my new ace sp today and have been thinking of switching the stock aluminum wheels and tires for something more my style. Anyone have any idea how much I could get for them. They are really sweet but I am more into black wheels