New Joystick continually presses up

I just replaced the joystick in my left Joycon with the kit from ifixit. Everything seemed to go smooth until I tried to use it. The stick is physically in the middle “resting" position, but is acting as if it's continually moved up.

I'm unable to calibrate due to the fact that I can't get it to return to a "resting" position. I'm not sure what's going on and any help would be appreciated.