I did'nt get a chance to get to it last weekend, due to work interfering, but I should be able to this weekend.
I had one side open the entire winter; the other side was for an attachment to let the dog get water if he was in the backyard and his water bowl got empty, and that side was always open, too.
Hopefully I can manage this this weekend. Argh.
Thanks again for your knowledge. Anything I have to watch when changing one of these out, assuming it's a frost free one?