Martin,
You are in the same boat as many others, and the problem with the 'fitness-for-purpose' of the exams is also known by the airline industry so this issue with the new questions will, in all probability, be taken into account (I would like to think so, at least).
After all, if everyone bar one passed the HP exam and the airlines are only going to hire fledgling FOs with 100% exam pass rates, he (or she) is going to be in a lot of demand!
I would bash on if I was you and just be ready for the resit - give yourself time...wait for the feedback to develop.