We had this problem when our boys were pups. What we did was fill an empty liter bottle with sand and stand it in the center of the pee pad. They lift their leg against it and it solves the problem.
You could also buy the little red hydrant that some pet stores sell. It's the same idea. I hope this works for you!
__________________  Snickers & Baxter Until one has loved an animal, part of their soul remains unawakened. |