I'm repacking a loose-ball headset on a used bike I just picked up, and it appears that the lower race has more bearings than the upper race. I'm going to replace the bearings, but am I correct in assuming that BBs have just gone missing from the upper half, and that both upper and lower should have the same number of ball bearings? The headset was WAY too loose when I bought the bike, so I wouldn't be surprised if some BBs had gone wandering... but the races themselves seem smooth, so I'd like to avoid replacing the entire headset...

Thanks!

-chris