Does anyone know where to get a gate valve replacement for an Octopus RPS-1000? It comes with a ball valve that is a pain to adjust. I have looking for about a week with no success. It has a weird metric thread. I can't use a retrofit kit, without destroying the skimmer, because of the way the return is glued to the body. So...I need to replace the whole double union ball valve assembly with a double union gate valve body. I wrote to their tech dept with no success, they can't even tell me the body size of the valve or what the threads are. Any suggestions would be greatly appreciated.