My mother (I'm sort of her caretaker) also picked up a new tub spout, handles, and shower head for her bathroom. The diverter in the current tub spout is absolutely shot and the handles don't work efficiently. The entire assembly inside the wall is not secured properly, when I was trying to make the water stop dripping by turning the knob the entire assembly pulled forward. She decided to go with a cheap AquaSource thing that was about $49 so I don't know how good it will be, but its her money and its what she wanted. I just do the gruntwork. LOL. I suppose I should head over to the tub and shower section and read some posts.
If all goes as planned, I will hopefully have things fixed by the time my sister comes out to visit.