I don,t think that you would cause any damage with the occasional trip up to the limiter.I,ve done it once but theres no need to go up that high theres no power.But, I think that if you change at 6300 where peak power is,you loose too much when you shift because you are not in the power band for the next gear.I change at about 6800 and I get good acceleration all the way.
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Aligator wrestler