All I can say is Neil, you are the man! Got my nipples quick and made two waterers. The run has a pvc pipe with two screw in nipples and a screw on top for filling and keeping out the yuckies. I can raise and lower it as needed depending on where the run is put and at what angle it is in. The push-in nipples I used in the top of a cranberry juice plastic jug. I only put in one nipple and hung the jug inside the tractor. One nipple suffices for my 8 birds. They got it right away and love both of them and I have no more poopy water!!! No leaks or drips either. Best thing I ever did and will continue to do. By the way, pvc feeders are wonderful as well. I didnt glue them so I can take them apart for cleaning from time to time and my girls like having the feed available at all times. If anyone needs nipples, Neil is the go to guy!!!