Let me guess tomyto the ace seems to struggle more than it did and the acceleration seems lacking? It's like your turning 5500 rpm to go 15-20 mph? I have been noticing the same thing with mine the past couple of rides, wondering if it's the differential binding I have read about, but I read there is usually a noise associated with it. Don't know much about it but after a thorough cleaning I will be taking mine back to the dealer.
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