Originally Posted by
spdracr39
So basically in the future keep your inner balls and your outer balls separate? I have heard before it is bad to mix opposing balls

Balls are cheap enough that that you can replace with new each time you rebuild. Even Grade 25, which is better than you need is too cheap to pass on.
Going new means not having to worry about a dropped and lot ball, or segregating balls when you take things apart.
The thing to remember it that the balls in each bearing is a matched set, and like paint, no two lots are identical.