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Don't forget a lot of short cycles, easy reving not beyong 6000 rpm and lots of oil change with good dino for at least 1000 miles (at least three times IMO). Check your factory tire air pressure.
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Oil.. Try Motul 3k series. 3100 can be had for under $5 a qt. It is on expensive side but it is a good oil.
I had my 919 broken in with Valvoline MC 10w40 dino and was getting about 45 mpg consistently. At 600 switched to Motul 10W40 cause a friend insisted. Lo and behold, the engine got silky, tanny smoooth and mpg has increased to a unbelievable 75. It is true. Next time I will use Motul 5100 for a kick.