Definitely put in for a priority remark. See if you can get the breakdown of marks for the different papers to identify which is most likely to lead to an upgrade or which is most surprising. Did your school/college not tell you about this, considering g you are so close to the boundary and everything hangs on that mark?
If you get an upgrade they will honour your place. Email them again to tell them you are only 1 mark off and having a review (remark) of the paper.
Huge amounts of good luck. You just never know!