I've had people tell me the bike shouldn't be running on avgas when tuned for racing but..... my HRC manual says otherwise. What kind of squish clearance are you running? And you're right, you might not need avgas. There is a big advantage of avgas, its got a long shelf life.
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MC28SP, '16 KTM 500EXC, '16 Beta Xtrainer, '07 BMW 1200GS, '96 Ducati 900SS