I would like to find out if anybody knows or has ever cut a stock fly wheel to make the motor rev quicker. I am having my motor built by Madman Engineering and I'm trying to set it up for the Dunes. It is a 3mm stroker wich will rev a little slower I know and having it ported and polished, also retarding the timing, possibly a bigger carb. I have a lathe a my work I just would like to know how much I can take off. I called Stealthy and they said I would have to take off at least 4oz to tell a difference. Any ideas?