Left thumbstick of my new Xbox 360 controller is kinda stiff?

It might fix it. The problem most likely isn't your thumbstick cover itself. It's most likely the mechanical part of the thumbstick. You can fix that as well but it requires soldering.

Reset xbox settings left trigger right trigger x y left bumber right bumber down down up x

hello. try pulling the thumbstick backwards. then, when you see the ball lower down to your neck, release the thumbstick. make sure the stick goes straight up not left or right. that will do the free throw. hope this helps

Turn off your console for few hours Remove all cables and wires Turn on your controller and hold ((( button on the backside of your controller Turn on your console Hope this helps!!!!!!

if this came with teh Xbox game, i would contact MS -- they may be able to replace it or repair it

clcick below to get in contact with them and explain the issue
http://support.xbox.com/support/en/us/nxe/default.aspx?ck=1

is it going all over the place?

i had a simmilar problem a while back i kept on clicking it and pulling it up a bit and it fixed

mine does that too. idk if there is a way 2 fix it, but try returning it.

its the controller

 

Depending on the type of disc drive that you have in your Xbox 360 console, use one of the following methods:

 

Method A: Insert a straightened paper clip or another small, stiff wire into the first hole from the left side of the disc tray. To release the disc tray, push the paperclip into the hole to press the manual eject mechanism. The manual eject mechanism is a white lever that is visible behind the console casing. The hole is located about one-and-a-half inches (approximately four centimeters) from the left edge of the disc tray.

 

Method B: Insert a straightened paper clip or another small, stiff wire into the second hole from the left side of the disc tray. Push the paperclip repeatedly into the hole to turn a gear to release the disc tray. The hole is located about one-and-a-half inches (approximately four centimeters) from the left edge of the disc tray.

 

Method C: Insert a straightened paper clip or another small, stiff wire into the into the hole that is directly under the "X3" in the Xbox 360 label on the disc tray to release the disc tray. The hole is located about one inch from the right edge of the disc tray.

 

In each case, make sure that you line up the paperclip or stiff wire to pass through another notch behind the hole on the console casing.