Same happened to me and others in my school. I was expecting an A, Predicted a B, got a C. I don't know what happened I thought I did so good the papers seemed so easy as well. They never gave the breakdown of my papers, Head of year said the new spec don't do that for AS. If you do you have to pay to get the original scripts. I think a remark is a waste of time just do better next year and get into clearing for a higher offer.