Rockingham Repair got together all the parts necessary for you to fix drift in your controllers! Simply remove the old analog sticks, attach the new one, solder the calibrating pcb on the back. From there we recommend using https://gamepad-tester.com/ to help you zero out your new sticks!
 
*For those wondering most analog sticks are not properly designed to carry the current perfectly, as such gaming companies generally calibrate them during manufacturing, however, only nintendo offers calibration software. As such the PCB's are required to manually calibrate the systems.