I have recently purchased a 2ltr 2004 Audi A3 Tdi. Overall, i am very pleased with the car, however, I have noticed the clutch pedal is quite stiff and in town traffic my leg starts aching. I'm not an OAP and consider myself quite fit. The car has only done 54K so I thought it might just be a strong spring on the clutch pedal. Can I easily change the spring for one with less tension, or could it be something else?