Talking to Geoff at Rock Oil this weekend he was saying alot of the racers using Rock are now running 40:1 which is alittle more like what we used to run the MX bikes on.

I personaly still run 33:1 though down from HRC recomended 30:1.

Still on 40:1 it wouldnt smoke that much... ever lol
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If I have to take the carbs off once more...