PS3 Controller Analog Stick's not registered to axes?

So I recently got a PS3 controller and installed the necessary programs for my PC to recognize the gamepad (MotionInJoy). I also managed to get Unity to read the various buttons presses correctly, but one issue I seem to have is reading the analog sticks as well as the D-pad. So I understand I use the Input Manager to access the various axes of the controller, and that most people online seem to tell me that the PS3 Dualshock Sixaxis controller's button map is that the D-Pad is registered as 6th and 7th axes, the left analog as X and Y axes, and the right analog as 3rd and 5th axes. So I tried it in the Input Manager, setting type to "Joystick Axis" and made 4 new inputs and named them "RightAnalogHorizontal," "LeftAnalogHorizontal," etc.

Then, to test out if it worked, I simply put in a code,

if (Input.GetAxis("Horizontal")) {

Debug.Log("Horizontal has been pressed");

} etc.

This was to make sure everything worked and would tell me whether or not I have pressed the direction of the D-Pad and Analogs. However, after trying this out, it seems my D-pad is registered to X and Y axes, and my left and right analog stick aren't registered to X/Y, 3rd/5th, or 6th/7th. I then tried out every axes from 3rd to 20th and none of them worked. Anyone else have the same problem? Anyone know why this is happening?