with the impending balance shaft failure on my BLB 2005 2.0tdi A4, i put my car off my road at the sart of february as the engine rattling noise my car had developed got a lot worse. there is 71k miles on the car. the car was parked up on the drive and the replacement chain to gear unit was ordered with my indy. after a 13 week wait for the part, the car was taken by a friend in a local recovery company to the indy and left with him. whilst its in there, im also getting the remains of a standard service, timing belt, water pump and tensioner and clear headlights and 6000k HiD's fitted. its also getting the driver window motor replaced as this stopped working around christmas. this is going to cost a lot of money and although id love a new car, after replacing the clutch and DMF at christmas and now the balancer shaft unit i cant afford to. so what i want to know is is there anything else i need to worry about? anything major that could cost me thousands (like the balance shaft failure?). what is this hex drive failure i keep hearing about? is this replaced when converting to a gear driven system or is there another fix?