I don't really know how to explain what I'm going to explain in a moment. So you have a joystick base that connects to the inside of the controller - that part is fine. Then you have the "stock" (we call it that now!) and the thumb rest. The thumb rest is perfect. The same goes for the base of the sticks. However, there is a HUGE issue with the thickness of the shaft. When I try to run (usually R3 on PS4) I stop and keep moving CONSTANTLY because the bar is too thick and is abutting the walls of the hole where the joystick is sticking out. You should make them significantly thinner and/or taller. I am going to buy my THIRD set of joysticks because it is very difficult to find a decent brand/model. I am extremely disappointed.