I took the bike out today. I ran into an issue while riding. I take off from a stopped position and get going. When I shift into 2nd and try to accelerate semi hard it seems like 2nd gear is going to blow right out of the motor. It seems like 2nd gear is missing or falling apart. It seems to happen between 1500 and 3000 RPM's. Am I having the shudder issue everyone is talking about? Do I need to be worried? Any advice on what to do next? Thanks.