Well, I dragged my Schefflera from California to Oregon to Washington and it's still growing fine (needs some radical pruning, tho). I'm inclined to agree with Kim that taking it out of the pot and just examining the roots is a good idea. They certainly seem to be able to take a great deal of abuse (obviously, since I still have mine!), but if it's too root-bound in the existing pot it could either be suffering from too much or too little water. From what I've read, too much water is worse than too little.
