So whats the deal with the loose bearing on the rear hub? (drive side) I've read other posts about this too, I'm assuming this is fairly common, maybe Yamaha is not making a tight enough fit? I had to center punch the hub and locktite the bearing in for now.. I guess we'll see how long it holds up. Anyone know of what the exact cause is for this to happen? On a side note my chain is also chewing up the inside of my frame, I've been running my chain to spec ever since I read about the hubs exploding.. maybe I should run it a little tighter? The chain is a DID X-ring and is not too think, but with the slack Yamaha calls for it allows enough play to rub the frame I guess. So I know my bearing spinning problem isn't from a chain run too tight. Any thoughts or comments?