Well, I just got off the phone to Jago Rd and because of the huge numbers of applicants, and I had a lower score on the part 4 of the RT, is why I didn't get an interview. I've been told I have to wait 6 months before reapplying, but is that just for the engineering role, or could I apply for another role a bit sooner?
There are 30 marks available in each section. The minimum total score required probably is about 50 out of 120. However, depending on the role applied for, in certain sections, usually numeracy and mechanical comprehension, you need to achieve higher scores than you would in English and reasoning (or whatever they do these days). You might have made the minimum required score to progress to the paper sift, e.g. 53 (15-15-15-8), but have failed to progress further due to your MC (8) being too low. Before you say anything, especially you @Ninja_Stoker, it's been a while since I last sat it so I can't remember what order the test is in, just pretend MC comes last. Call recruitment and see what they advise. Taking the test again with a new application might be better for you.