How much shaft play before rebuilding is needed?
 

I am finaly out of school for the summer and getting all the parts nessecary for turboing my crx assembled. I bought a dsm t25 and was told that it had no shaft play. Well upon inspection it def. has some, but I'm not really sure how much is to much. The play is only side to side, not in and out and its not enough to be hitting the housings but its def. a noticable amount. Is there any good way to tell weather its to much or should I just go ahead and figure to rebuild it for safty's sake.