if the ball bearing fell out, it'd just have ALOT of slack in the clutch. it wouldn't do what he's describing. i don't remember off the top of my head if the fzr has a judder spring or not, but on some bikes, there's a big concave washer that goes on the inner clutch basket before the clutch plates go in. the first plate that goes on is the "odd plate" it's the only plate that is thinner across it's face than the rest. if you put a normal fiber in first instead of the one odd plate, it won't let the clutch disengage properly. alot of aftermarket clutches don't use the one odd plate, all the plates are the same, so you have to take out the judder spring and the big flat washer behind it. basically the judder spring and it's seat look like big washers, about 5in or so in diameter, but they're only about 1/8 thick.

man, it's alot easier just to show you than to try to describe it.

anyway, what kind of clutch did you put in it?