Problem is, there will always be a question that separates the best from the average. That's for most a level exams. Chemistry this year will have new types of questions in both AS and A2. Those marks are tough to get and that's the challenge I need to overcome, hence why just practicing OCR alone is not good enough me and this may apply to some others. It depends on how good you are at interpreting things and how well you can apply ur knowledge. OCR and all exam boards are smart, they know that students will buy the OCR book and do OCR papers as they know we have a lot of stuff to do and probably won't get enough time to try new types of questions. So I do advise everyone to try new types of questions if you get time, it could make the difference. Examiners want to catch you out and they even write in one of the reports that candidates who just try to remember answers and ways of doing things are the ones that will be disappointed on results day, well at least for chem. UNDERSTANDING>MEMORY.
F324 June 2015 is a good example of what I'm trying to say and F325 Jan 2013 aswell.