I'm no expert on these engines. I have however rebuilt and broken in many m/c motors and a coupla cars too. I understand general consensis to be: vary your speed and load don't hold one throttle position for very long, ride in all ranges being wary of max rpms. But the last thing you want to do is lug (rpms too low) the motor around during break in. Ride it, just don't ride it too far or too fast right out of the gate. I would reasonably expect the rings to be seated and the motor to be broken in after 1 gal of gas.