I have fuk'd around with that exact same valve. There are adjustable settings on that valve that you don't have right. I had a real similar issue with the handle not traveling the correct distance. It took me hours but I finally figured it out. I also took it back and got a second one that did the same thing as the first one (because there was nothing wrong with either of them) I think that I read the directions real good and finally determined where I was going wrong. My guess is that if you have the correct valve, there is probably nothing wrong with it and you just have to get the adjustments right. The handle is not traveling far enough to open the valve.