Yeah it had to have loosen almost a full rotation I would believe. no way it could tighen 10 degrees :) gunnerbuck - Yeah the seal is generic. I ordered it form Munn Racing and thats what i got. if the shaged o-ring was causing the leak and not the CS seal/bushing then how could it leak out of the engine to the ground? would it be cause the sprocket came a full turn loose? Whatever it was it was leaking, and its also nice to see a generic CS seal can be found at a local source too if you run into trouble somewhere.