STK Issues with Xbox 360 controllers.

When I try to play STK with a wireless 360 contoller on my Windows 7, The left and right triggers are registered by the game as pressed without touching them, which is an issue in 2 cases,
When triggers are Accelerate / Brake : As soon as the race starts, it gives you the accelerate penalty, other than that it works fine.
When the triggers are Fire / Turbo : It uses a powerup as soon as you pick it up. It is also apparent in Time Trials, you use your Turbos at the start which lead to the penalty.
When triggers are Accelerate / Brake : As soon as the race starts, it gives you the accelerate penalty, other than that it works fine.
When the triggers are Fire / Turbo : It uses a powerup as soon as you pick it up. It is also apparent in Time Trials, you use your Turbos at the start which lead to the penalty.