You don't need longer, just something different. Powder=LegBurn unless you're on a swallow or something like the Fish, Malolo... super setback super tapers.
If you're getting chatter try something like a K2 Slayblade, Ride Highlife, Arbor Abacus, Burton Supermodel, or a Neversummer Raptor.
Anything from a 160-163.
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