Yes i agree, very good. Im slowly getting more speed on mine as the engine wears in from the new crankcase. At about 55kph on running in fuel.
Swapping to opti-2 100:1 and race formula octane and oxygen additive after I use the 20:1 running in stuff.
5x the fuel per stroke, amazing by the sounds of it. Plus more oxygen for when there is a lack of it when riding.