Ah, Narooma.. God's Country!
Believe it or not, MItre 10 has a stock of bits and pieces, even taps and ball lock fittings etc, and will get pretty much anything you want.
A few KM away, CObargo has a home brew shop as well, not qute as well outfitted, but still good.
Nobody has any craft beers in stock except I think the place out by Woolies carries Little Creatures (especially in summer)
Let me know and we can catch up next time I am down there... we have a coast house behind the oval...