Help! How do I interface a joystick to a S2C Xbee?

Would like to transmit joystick movement wirelessly using S2C Xbee’s. Have used series 1 Xbee’s before with no issues, but S2C has been nothing but a headache. Was told that the voltage across the joystick cannot exceed the internal reference voltage of 1.2 VDC…which is how I have my circuit set up, but I read 3.2VDC in both extreme positions of joystick. Using pin 20 on transmitting module for analog input, and pin 6 on receiving module for PWM output.