I had a problem with getting water through the shower head, I checked the TOH website, and found I could possibly fix this problem with changing the spout/ diverter. Lo and behold it did not fix my problem. I do not know the brand name, but, I have a single " knob" for the hot and cold selections, and then the spout/ diverter is underneath it. I am at my wits end and hope I do not have to change my plumbing. Please help.