Don't give up so easily Nathan, worthwhile things do not always go smoothly :!:
Take a picture of the runny or green poos and post them here so we can help you.
Give us some history about the birds before you got them, how old are they, how they were reared and fed what they were inocculated against, have the been wormed, what were they fed on :?:
They will sort out their pecking order within 2-3 weeks and many here can give you tips about that.