Keg carbonated perfect. I set the regulator to 5psi and pours fine. After 2 or 3 it slows down and the pressure drops to zero so I have to mess with the dial until it gets right again. I did get the cheapest kit off eBay.... Is it a bad regulator? There are no leaks and will hold a consistent pressure as long as I don't get a beer. Get a new regulator or am I missing something really simple?