The engine sprocket does not spin so I unscrewed the 3 screws holding on the plate that covers the engine's sprocket, thinking i could simply put the chain on it that way. However, it seems like there's not enough room between the sprocket and the "wall" of the engine. As you may be able to see from the attached picture, I tried to fit the chain into its proper place but there is not enough room. Am i doing this the right way? Or is there some other, much smarter way to do this? Thanks so much for the help!