Hello, I had my husband build a water system for my chickens using a rain barrel, PVC's with turn off valves and chicken cups. We had it working, but some of the chicken cups leaked. We tried adding new ones on, but they still leak too. Should the PVC pipe angle up? It's been the last one leaking. Also, what height would work best and spacing of the cups? They didn't come with directions. Also, he didn't make the holes straight on the pipe, some are lower than others which makes some of the cups not level. We're going on vacation for Christmas and would like this working. Thanks for your help!