Can you give me some expert advice I had my cam belt changed by a local garage 1 month ago it has since snapped and is back with them. They are saying the only damage is the push rods as it snapped at low revs. Is there likely to be more damage that needs fixing (pulling wool over my eyes) or are they telling the truth. The reason it snapped is they failed to fit the washer on the crank pulley so it slowly got worn down then snapped. Thanks for any adivce, theya re also tryingt to charge me 20 hours labour for a clutch and cam belt change !!!!!