We are about to build a PVC waterer with nipples. I went to the How-to section and the section on waterers/feeders has no content. I have been doing a search for the last hour and not finding good instructions on putting that together. Husband wants to know how you put rubber washers and nuts inside the pipe. We bought 6 screw type nipples. Can I bother some of you to post pictures/parts lists for your systems? Thanks!!