There's some acceleration at lower speeds in the higher gears, but not a lot, and second in particular seems jerky below 20. Though I drive my car with a lead foot, so maybe I'm expecting a bit much. Everything I found about this bike said to rev it, and I'm not going much higher than the maximum speeds for the break-in period, I'm certainly not holding the throttle wide open or anything. First seems slow at first, then takes off when it hits about 12, second seems slow and jerky till it hits 25, then it takes off. Even before I started having problems I was starting to wonder if the idle speed was too low. It would take at least 2 minutes of idling with the choke on full for it to stay running when I moved the choke to half, then on half for a minute or so to stay running with the choke off in 50-60 degree weather. After warming up idle still seemed a bit weak, and I'd have to give it some throttle for it to move much in the friction zone. Now with the higher idle speed and premium gas it takes about 30 seconds on full choke to warm up, and there's actually some pull in the friction zone. I am a bit worried that the idle speed might be a bit high though, how do you tell if the idle speed is set right without a tach?