… should I have in a Campy Track Headset??
They are small, 4mm, loose and when I re-pack it I am about 4 short in each race of the standard “fill then remove one” count.
Is this usual? And, no I haven’t dropped them!
Did you wash them in hot water and they shrunk?
I have no idea sorry 
Normally it’s cold water that does the shrinking.
Hah! Good call!
Cold or hot no matter … apparently the track version always had the small balls!
Too technical for me … unless I learn otherwise I will reassemble with the “fill minus one” count … no idea why there is so much ball space as disassembled??
I’ve just looked at a couple of new Campy headset races…and they were full???
Are they meant to be caged?
A cage would take up some of the room by keeping them ever so slightly apart!
Caged caged caged caged.
Yes, the ones I looked at were caged
The Campy Pista, track, headset … which is what I got, I think … has 5/32 ball that were always loose packed as best I can find out. Manufacture ceased some time back and this frame is early 80s? The BB is not caged, dunno just when caging became the thing to do?
So, I am reassembling with 24 top and bottom, loose, rather than the 20 that came out, which just doesn’t look right.
It’s on the Gefsco, been re-chromed & painted, watch this spot for pics!!