Okay I just got my klx 110 running and riding it around the chain fell off the rear sprocket about 3 times already. When the bike was sitting I checked to see of the rear wheel was loose and it wasn't. And I noticed that the rear sprocket moves. Like the whole hub that is connected to the sprocket and wheel moves. It wiggles. And when riding it you look at the sprocket and give it gas you can see the play in it. I have no idea what it is and I need to know how to tighten the chain also.