I bought an aluminum swash plate and it separated too. So I glued it carefully with CA and have had no more problems. If you go to longer control throws you will get more response but you will also increase the chance of a blade-to-blade strike (uppers hit lowers) and the little flybar holder may also break.
Hint: take out the screw in the plastic flybar holder. The flybar will spring out on crashes instead of breaking the holder--most of the time. Eventually you'll get the aluminum upper hub, and by that time you won't be crashing as much.