Xbox controller drift issue

I acquired a Xbox controller once I transfer the analog stick upward I nonetheless kinda transfer(left analog stick), then I discovered this video https://youtu.be/Im6-Y08SKpM of this man fixing the controller with the problem that I’m having. He eliminated the grey items for the drift after he eliminated it began to work then I began to learn the feedback some say I didn't work one individual mentioned it labored so I used to be questioning ought to I strive his technique or ought to I open the controller and clear it?