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05 Yz250 Won't Rev Out

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Rode bike yesterday ran fine I had 93 octane 40:1 ratio. I had some 102 race gas mixed 40:1. Bike didn't run right. I drained it out put 93 in it. Ran fine now it will start right up but when I rev it up hits like a rev limiter. I cleaned power valve,carb/needles. Changed spark plug/new filter. I don't kno what else it can be? Piston and rings?

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