Whenever I rebuild that style of BB, I reuse the ball retainer. I carefully push out all the old balls being carefull not to bend any reatining arms. After everything is clean I push in new grade 25 bearing balls, grease, install, and set preload. You should have NO NOISE, if you are using loose balls,it's very easy to knock one out while installing the adjustable cup. Then you have to take everything apart, and start over.