Rotor beveling/chamfering/scalloping/trimming/port phasing

[Ender]

I just learned about this technique today and thought I'd bring it up here. I hear CLR Motorsports does this, I'd like to learn more about port phasing as well as how/where/how much balancing the rotating assembly. I hear some great gains can be had from them, and that (of course) they help lighten up the rotors which in turn makes the motor more friendly to those high rev's.