Definitely the green bug. The CBR's fueling is pretty much spot on and there is literally no jerkiness at extremely low speeds and on/off throttle transition. I would recommend you to check your throttle freeplay and make sure you time your clutch and throttle transition. Extremely slow maneuvers coupled with engine lugging will result in jerky throttle transition. This is dangerous at times, the vehicle can stall and you may take a spill.hello! I’m a brand new rider. I just got a 2011 CBR250R last weekend. I’ve been working on slow speed maneuvering around my driveway and front yard and I have noticed that when the clutch isn’t engaged and I let off then get back on the throttle, it’s very jerky. I am practicing taking my weight off the handle bars by squeezing the gas tank, but I’m not sure if it is the bike not properly tuned or if I’m just too green at riding to have the throttle down. I desperately try to be as slow and soft with the throttle to get it to not be so jerky. Any suggestions?