How do you improve CR score from 700 to 800?

<p>Many CCers are capable of attaining a consistent 700 score, which is around 6-7 wrong total in the three parts. However, not many, including me, are able to reduce those 6 errors to 2 or 3. There always seems to be a few, kind of confusing questions that could easily go either way. I've read all the posts about being devil's advocate and marking up the prompt, but I still manage to get 1 or 2 wrong per part. So, to all who have achieved 750+, how can I make this, somewhat luck-dependent, jump?</p>