So I took the dust cap off to shave it to make the stock sprocket fit, but the sprocket still doesn't slide over the hub. Is it supposed to go over and sit flush with the spokes? Mine didnt come with instruction manual so trying to figure this out. If it does need to sit flush over the hub can I just shave a millimeter or two around of the sprocket to make it work? Anyone know where I can at least read the manual? I'm sure I can figure it out bit I also wanted to learn about a motor at the same time. Thanks for all the help. Appreciate it.