Hi,
Do you have a DMM?
Can you please post a schematic diagram of your project, in particular how you have the joysticks connected to power and the controller?
What model controller are you using?
If you have a DMM, can you measure the voltage from each joystick going to the analog inputs, with respect to gnd, and tell us what voltage you get for each when;
Joystick fully in one direction.
Joystick fully in other direction.
Joystick in central position.
Thanks.. Tom... 
