Hi guy, im currently haveing trouble with the rear sprocket that goes on the spokes.I have a 29er genesis that i bought from walmart.i took apart the whole rear hub and grinded the sprocket hole alittle more.I have a coaster brake and the bolt heads dont clear.Do i need sinker bolts?it has no dust cap.Also i bought some ape hangers 25inch and the throttle cables and clutch cables r to short what should i do?im new to this motorized bicycle scene would appreciate the help.Thanks