12 tooth sprocket causing chain to grind on RMZ450 case ...
· The 12 tooth is quite a bit smaller in diameter that the 13, which ended up lowering the height where the chain rotates around the sprocket. The case area sticks out just a little bit near where the sprocket attaches at the middle, and the oring chains width ends up rubbing against the case area where it bulbs out. There is a protective metal plate that forms against the case, I'm just hoping ...