hmmmm . i'll add my free hub story .
Decided as mine is Super Crunchy , noise prob about to fail ... i would give it a quick service .
Removed wheel , cassette undoing the cones / locknuts , Dog comes in and jumps on me as its walk o clock
Special spacers ( as above ) disappears onto / into some fucking where .......
I curse the Dog , we go for a walk, return home and proceed to search for the spacer , sweep the garage floor , turn on the super light and still can't find the spacer .
I give up looking turn around and it falls out of my jumper - coz it was greasy it stuck to me .
Reassemble , not as gruanchy , but passable .