If you’re mostly playing cod warzone and are noticing the drift there then just go to your controller settings in game and set the stick dead zone to .09
for some reason that game is coded soooo badly that it even registers fake thumbstick drift.
I believe what he means by take some tweezers to the thumbstick gimbal is to physically twist the white holders with some tweezers in a way that would crate a new return to center point