HELLO EVERYONE, I'M NEW TO THE AUDI OWNERSHIP AND THIS FORUM. I OWN A 1991 200 QUATRO WITH THE 20V 3B ENGINE. IT QUIT RUNNING THE OTHER DAY AND I TRACED TO THE HALL SENSOR IN THE DISTRIBUTOR AND THEN FOUND THAT THE ROTOR WAS NOT SPINNING. I PULLED THE DIST AND FOUND THE GEAR WAS STRIPPED ( NYLON GEAR ). DOES ANYONE KNOW IF JUST THE GEAR IS AVAILABLE, AUDI HAS DISCONTINUED IT AS A SPARE PART.