My TE stick button is stuck

My X button is kinda stuck. It doesn’t go back fast enough compared to other buttons. Also, how do you take off the buttons?

put some rubbing alcohol in a cup… take the button out, put it in the cup so its submerged… shake it around a bit with a spoon… leave it in there for 5 minutes… after your done take it out and let it dry. good as new… open the joystick via 6 screws that require allen key, then take off the quick disconnects off the button which are two, then push in the tabs while popping out the button thru the top

Just the plastic cap?