Oh yea I remember seeing that in a few post that I have read. Don't know anything about superchargers so I hadn't thought anything about the coupler. Do they get worn out and wobbly or something like that? If its a piece that is prone to wearing out and needing to be replaced around a certain mileage or as a precaution like a timing belt or chain would be then yes that is something I might look into replacing. Thank you for the heads up.