See my post a couple above yours.
Matching your CV to the job description and person specification has got to be a good thing - looking at it a lot and making a significant effort can only be a bonus in my opinion.
From my experience, the 70 questions bear a striking resemblance to some of the interview questions, so if yours are solid with good examples then that's ideal...However, as i have said in previous posts, i found that i was able to keep improving my 70Qs for each new application, based on things like previous interviews. I'm unsure if it would help at all, but on the application there is the option to upload your CV, and also a covering letter....now the covering letter is not a requirement, but I adapted an existing one and made it relevant - maybe i was trying too hard? But suppose it's an option.
Don't forget that the initial online test results are also taken into account when candidates for interview are being selected, so depending on how you thought they went, they may help or hinder you. However, as you have had an interview already, it's a positive sign.