yeah MIKECR - your right.
Its not a subject like law where you can memorise the question bank - its a subject with a lot of practicle applications and if you can learn the whizz-wheel inside out that takes about 250 questions out of the question bank right away.
I suppose I'm about 80-90% confident with the crap-5, my problem area I guess is the chart sort of questions working out angles, convergency etc