Originally Posted by TreeSemdyZee

The chatter can be kind of annoying, but can be overcome with technique. What I like is the marbles when you romp on it. Not to mention the acceleration gains with the lighter flywheel.
It's been almost a year, so I can't really remember what it sounded like before.
You might talk to Joe at Zspeed and get his feedback. He's very knowledgable and a real nice guy.