I found the pyschometric quite easy, and got all 30 in each section.
Best tips I would say refresh yourself on how to multiply fraction and multiply large numbers etc.
When you take the actual test you get about 18 seconds for each question I worked out and most you can answer almost immediately.
If you see a question that will require workings that may take a while then slip it and get all the easy ones put the way as they are all worth the same.
I posted a reply onto the pyschometric thread the day I did it an it includes some of the questions I got etc.