Guys pls help, is there a difference between an A6 and A6 quattro tie rod? i got it replaced with a tie rod from Napa, and the mechanic said it didnt fit right and he had to add a washer to tighten it more.. im thinking maybe its not the right tie rod i got? maybe i got a reg A6 tie rod? mine is quattro.. help me , also my heater blower doesnt work until i tap or hit it, but i cant adjust temp and fan rpm from the screen in the car, its just locked at high rpm on fan and Lo temp, cant adjust that, means blower motor is bad and the computer of the heater? or its malfunctioning just because the motor is bad? pls help i can give you my phone number if u can give me a call and help me..really desperate lol