Good Guess
Ok, I've finished the 2003 長文・文法 paper and using many of Roy's good suggestions, I managed to wade through far more of it than when I attempted the 2004 paper before time ran out.
I basically did the grammar first, as always (which was really tough, including many points that I am sure were not even mentioned in the Unicom book), then worked my way backwards through the reading sections.
At the end I guessed the answers for the whole of the the first reading passage - a mammoth 35 points down the drain. But after marking the test I realised that I had got 3 out of 7 right! Nice bonus.
Also, as I'd got through more of the questions this time, I got about 57%. Not great, but not that shabby considering my expectations just a couple of months back. Still, after calculating, even if I got 100% for the listening test, my overall score still wouldn't be near to the pass mark.
Today I went back to the long reading question and gave myself ample time for my tired head to try and figure out the answers. I finished, checked my answers, and to my horror discovered that I'd got just 1 out of 7 (5 out of the 35 points) right - considerably less than my 5 seconds of guesswork during the test. How thoroughly demoralising.