Every time I put my T in park, turn the engine off and let off the brake, the pedal doesn't come all the way back up. Its only a little bit, but enough to keep the brake lights on. If i pump the brakes after, it returns back to normal. I do have a power booster and am thinking its something with the booster? I could also just adjust the brake light switch so it takes a little more pedal to turn on but Id rather fix the real problem. Any Ideas?