Don't overwork it. As long as you're not locking ink in the emulsion (from printing when emulsion was not exposed long enough), use an emulsion remover (basically Sodium Periodate), then a ghost remover for any stubborn spots, make sure you don't let anything dry before you wash it out.
Some emulsions are so easy to remove where you need not much more than a hose and it falls off. Others not so much.