I believe that the woodruff key slot in the shaft should align with the little reference mark at the edge of the seal when the pin is in the hub. That is not an 'at rest' location, tho. The rollers are climbing the camplate. You can use a nut on the shaft to rotate the shaft to the correct location and then use the side bolt to hold the shaft in place. Then take the nut off and crank on the hub. Then release the shaft. Then you will need to fine time it using vag-com.