Need some advise on rear ZX5 SP Outdrive

[eddiemori]

Hey guys,
I finally got my ZX-5 SP put together!
Bought it off my brother and fixed/replaced a lot of the parts!
But i need your help on an issue i noticed right away...
The rear right CVD(LA208) popped out from the outdrive(LA201) after i gave it some throttle!
it even chipped the some of the steel off of the outdrive! it went flying passed my laptop!
Anyway, i notice that when the car is on a stand the "pin?" part of the CVD is almost hanging out of the out drive! Obviously when there is a load on the rear suspension it seems to be fine. I'm worried that during a jump or at an akward angle it'll pop out/break the outdrive!
is this just an issue with my car? did i miss something in putting it together? if not what's the work around? has anyone else have an issue with this?