[Justin Stiltner]

I think the problem is that you are using 3 wires,
because the total restance between the wiper and the 2 outside connections stays the same you have the same amount of ground all the time,

cut one of the wires loose that are supplying ground and see what happens,

really all you were doing with 3 wires is changing which pin the +5v was grounded to.

But if the manual says to use 3 pins then dont use my suggestion, I havent used analog muchk so I could be wrong.