You should take note that there are 2 types* of QR adaptor for the bulb. The one in the exploded diagram is actually for the 5 bolt hub, the one in my ebay link is for the 6 bolt. The difference is the 6 bolt one is thicker at the disc side and the 5 bolt version is equal and identical on both sides, as in it doesnt have a fatter bit on the disc end.
*
In truth there are actually 3 versions, the rarest one is for angular bearings, is similar to the 6 bolt version, and is so rare we needn't worry about getting them mixed up.