I did not realize he was asking how to move it over one tooth. It is easy and just like you say. Back out the tensioner, unbolt the cam sprocket and slide it out enough to move it over one tooth. Then move the camshaft to line up the keyway, slide the sprocket back on, install the fastener (torque to spec) and tensioner and you should be good to go. Should not take more than about an hour.

__________________
Jim