The proper orientation for a retainer is in the bottom of the trash can. They are not necessary and eliminating it and using free balls (heh, heh, I said free balls) will probably allow you to get in another 2 bearings in the BB which will prolong the life of the BB.
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Il faut de l'audace, encore de l'audace, toujours de l'audace
1980 3Rensho-- 1975 Raleigh Sprite 3spd
1990s Raleigh M20 MTB--2007 Windsor Hour (track)
1988 Ducati 750 F1