Can someone please let me know which parts should have been replaced on a 60k cambelt change? I was told the full kit was £150 and have just had the work done, but I asked for the parts they took off and I only have a roller and a belt and four bolts - I dont believe they have changed the tensioner. Can anyone list for me the full £150 parts kit? The parts on the invoice I received only add up to about 75 quid!! i am suspicious because I got a 20% discount under a dealer offer and think they might be skimping.