Just a thought. To get more Torq or speed thru the gears; why not just change the Rear sprocket to a smaller (by 2) teeth?? The older Trikes had them and they were changed to a bigger sprocket later. I have a 2010 and I know it has a bigger by 2 teeth sprocket and I have been complaining about the effort of the 103 engine climbing up to running speed. I know a CAM will help but why not just change the rear sprocket.? Any thoughts on this, people.?