I couldn't find that valve on their website. What are you using to divert the water from the tub spout to the showerhead? Note, on many of these valves, even though they have two outlets, you are supposed to plug one and onlyuse the other. Then, you use a twin-el (an elbow with two outputs) connected to the tub spout (assuming the spout has a divertor in it). A little more description or a picture of how it is put together should make it clearer. Do you still have the installation instructions? That should say how to connect outputs.