Bottom bracket bearing issues I’ve been having some bottom bracket (BB) woes. Noticed a click on the top of the left pedal stroke so decided to re-grease the BB. Took it apart cleaned and re-greased everything, then put it back together. 

Roll forward a week. I notice that my cranks sticking here and there, it gets progressively worse on the ride. I get it home and off the bike notice my bike has turned into a rain-stick (this provided no calming effect). 

Queue another strip down of the BB.
Upon inspection, I found all the bearings on the drive side were out of the cage, which now would no longer hold them. I pinched the cages with pliers to secure the ball bearings back in place, re-greased &amp; repacked.

I lifted my bike out today for my cycle to work and jingle-jingle; LOOSE BEARING!
Cycle to work was sub 3 miles so risked it.
Want to take care of this ASAP, so my questions are:

1. I figure I am over-tighting the bottom bracket, causing the damage to the cage, however what else could cause it?

2. What size bearings does an Italian threaded BB take?

BB info:


Campagnolo Italian threaded
plastic sleeve is in two parts, the smaller part pushes into the
other.
2 caged bearings from memory 8/9 bearings in each cage.
Two screw-in cones, one locking.


Here are pics of my spindle:


Brev. whatever that means
Take everything apart,get all the grease out of the bb and feel inside where the bearings go,it should be fairly smooth,do this to both sides and compare the "feel" of each..If it doesn't feel right(burrs,cracks) there's your problem...I just replaced the bearings in my bike and they were 1/4 inch but your bearings will probally be metric in that general size,it's easy enough to find online...don't skimp on the bearings,get grade 25 bearings,there the best...amazon has them for short money and good luck